1. System of measurement based on centimeters and grams and seconds.
4. A girl or young woman who is unmarried.
8. (British) Sleep.
11. A toilet in England.
12. A tax on employees and employers that is used to fund the Social Security system.
13. North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean.
14. A Scottish word.
16. A metric unit of volume or capacity equal to 10 liters.
17. A public promotion of some product or service.
18. A state in the Rocky Mountains.
20. Capital and largest city of Iraq.
22. The capital of Bahrain.
24. A soft yellow malleable ductile (trivalent and univalent) metallic element.
25. A white metallic element that burns with a brilliant light.
26. Resinlike substance secreted by certain lac insects.
27. (British) A waterproof raincoat made of rubberized fabric.
29. 100 fen equal 1 yuan.
31. A metrical unit with unstressed-stressed syllables.
33. The blood group whose red cells carry both the A and B antigens.
34. A particular geographical region of indefinite boundary (usually serving some special purpose or distinguished by its people or culture or geography).
40. A small cake leavened with yeast.
41. (folklore) A small grotesque supernatural creature that makes trouble for human beings.
44. Electronic equipment that provides visual images of varying electrical quantities.
46. Last or greatest in an indefinitely large series.
47. A fractional monetary unit of Japan and Indonesia and Cambodia.
48. In bed.
49. Headdress that protects the head from bad weather.

1. An assertion of a right (as to money or property).
2. Mild cream-colored Dutch cheese shaped in balls.
3. Very large white gannet with black wing tips.
4. 30 to 300 kilohertz.
5. A resource.
6. Someone who works (or provides workers) during a strike.
7. A deep bow.
8. A radioactive transuranic element which has been synthesized.
9. (Old Testament) The second patriarch.
10. A genus of Ploceidae.
15. Tropical woody herb with showy yellow flowers and flat pods.
19. A member of the Siouan people formerly living in the Missouri river valley in NE Nebraska.
21. Hard greenish-brown wood of the lignum vitae tree and other trees of the genus Guaiacum.
23. A radioactive element of the actinide series.
28. A compartment in front of a motor vehicle where driver sits.
30. Refuse to acknowledge.
32. The cry made by sheep.
35. Not widely known.
36. Very dark black.
37. According to the Old Testament he was a pagan king of Israel and husband of Jezebel (9th century BC).
38. A Chadic language spoken south of Lake Chad.
39. The basic unit of money in Thailand.
42. Having undesirable or negative qualities.
43. Antibacterial drug (trade name Nydrazid) used to treat tuberculosis.
45. Informal terms for a mother.