1. United States inventor who manufactured the first elevator with a safety device (1811-1861).
5. All the New World monkeys except marmosets and tamarins.
12. A number of sheets of paper fastened together along one edge.
15. The basic unit of money in Ireland.
16. United States writer of hard-boiled detective fiction (1894-1961).
17. Leaf or strip from a leaf of the talipot palm used in India for writing paper.
18. The principal dish of a meal.
20. Large black bird with a straight bill and long wedge-shaped tail.
21. An enclosed space.
22. A large galleon sailed in the Mediterranean as a merchantman.
23. Of or relating to or characteristic of Milan or its people.
25. A song of praise (to God or to a saint or to a nation).
28. The branch of computer science that deal with writing computer programs that can solve problems creatively.
29. A soft yellow malleable ductile (trivalent and univalent) metallic element.
30. A state in midwestern United States.
32. (informal) Having or revealing stupidity.
33. Neither moral nor immoral.
37. A domed or vaulted recess or projection on a building especially the east end of a church.
39. A magnetic tape recorder for recording (and playing back) TV programs.
40. The form of RNA that attaches the correct amino acid to the protein chain that is being synthesized at the ribosome of the cell (according to directions coded in the mRNA).
41. A white metallic element that burns with a brilliant light.
42. A logarithmic unit of sound intensity equal to 10 decibels.
44. A condition (mostly in boys) characterized by behavioral and learning disorders.
46. (Welsh) A warrior god.
48. Similar to the giraffe but smaller with much shorter neck and stripe on the legs.
50. A formal expression of praise.
53. The United Nations agency concerned with the interests of labor.
54. An early form of modern jazz (originating around 1940).
55. Fear resulting from the awareness of danger.
57. Bony flesh of herring-like fish usually caught during their migration to fresh water for spawning.
59. A linear unit of length equal to 12 inches or a third of a yard.
61. Any of various plants of the genus Limonium of temperate salt marshes having spikes of whit or mauve flowers.
64. (Old Testament) The second patriarch.
66. A high-crowned black cap (usually made of felt or sheepskin) worn by men in Turkey and Iran and the Caucasus.
71. Serving no useful purpose.
72. A promontory in northern Morocco opposite the Rock of Gibraltar.
74. The compass point that is one point north of northeast.
75. A tricycle (usually propelled by pedalling).
77. A loose sleeveless outer garment made from aba cloth.
78. A member of an Iroquoian people formerly living on the south shore of Lake Erie in northern Ohio and northwest Pennsylvania and western New York.
79. A small square tile of stone or glass used in making mosaics.
80. A light touch or stroke.

1. An organization of countries formed in 1961 to agree on a common policy for the sale of petroleum.
2. Tropical American flat-jointed prickly pear.
3. (prefix) Within.
4. Being definitely out of the ordinary and unexpected.
5. Russian dramatist whose plays are concerned with the difficulty of communication between people (1860-1904).
6. (Akkadian) God of wisdom.
7. The rate at which heat is produced by an individual in a resting state.
8. (Islam) The man who leads prayers in a mosque.
9. Markedly different from an accepted norm.
10. A studio especially for an artist or designer.
11. An inactive volcano in Sicily.
12. A person who habitually pretends to be something he is not.
13. By bad luck.
14. Small European freshwater fish with a slender bluish-green body.
19. (prefix) Outside or outer.
24. Relating to or accompanying birth.
26. A wild and exciting undertaking (not necessarily lawful).
27. Swedish economist (1898-1987).
31. English explorer who with Sir Richard Burton was the first European to explore Lake Tanganyika.
34. An organization of independent states to promote international peace and security.
35. Nonsteroidal anti-inflammatory drug (trade names Acular and Toradol) that is administered only intramuscularly.
36. A lake in northwestern Russia north of St. Petersburg.
38. Block consisting of a thick piece of something.
43. Type genus of the Xiphiidae.
45. Lacking or deprive of the sense of hearing wholly or in part.
47. Of a pale purple color.
49. Hold back to a later time.
51. A deceptive maneuver (especially to avoid capture).
52. A metric unit of length equal to one billionth of a meter.
56. A carriage consisting of two wheels and calash top.
58. Consider or hold as true.
60. West Indian tree having racemes of fragrant white flowers and yielding a durable timber and resinous juice.
62. An edible tuber native to South America.
63. (law) A defense by an accused person purporting to show that he or she could not have committed the crime in question.
65. Big-eyed scad.
67. A large number or amount.
68. Wading birds of warm regions having long slender down-curved bills.
69. A small cake leavened with yeast.
70. According to the Old Testament he was a pagan king of Israel and husband of Jezebel (9th century BC).
73. An informal term for a father.
76. The branch of engineering science that studies the uses of electricity and the equipment for power generation and distribution and the control of machines and communication.