1. United States musician (born in Japan) who married John Lennon and collaborated with him on recordings (born in 1933).
4. In bed.
8. A white linen liturgical vestment with sleeves.
11. Worthless or oversimplified ideas.
12. A strip of land projecting into a body of water.
13. An ancient Hebrew unit of capacity equal to 10 baths or 10 ephahs.
14. Mild yellow Dutch cheese made in balls.
16. Having undesirable or negative qualities.
17. Large brownish-green New Zealand parrot.
18. West Indian tree having racemes of fragrant white flowers and yielding a durable timber and resinous juice.
21. A white metallic element that burns with a brilliant light.
23. The month following January and preceding March.
25. Aircraft landing in bad weather in which the pilot is talked down by ground control using precision approach radar.
26. Medium-sized tree having glossy lanceolate leaves.
28. The blood group whose red cells carry both the A and B antigens.
31. (Scottish) Bluish-black or gray-blue.
34. American professional baseball player who hit more home runs than Babe Ruth (born in 1934).
37. (Akkadian) God of wisdom.
38. According to the Old Testament he was a pagan king of Israel and husband of Jezebel (9th century BC).
40. An intensely radioactive metallic element that occurs in minute amounts in uranium ores.
41. (Babylonian) God of storms and wind.
43. Extremely pleasing.
46. A user interface in which you type commands instead of choosing them from a menu or selecting an icon.
48. (informal) Of the highest quality.
49. Goddess of the dead and queen of the underworld.
50. Offering fun and gaiety.
51. The federal agency that insures residential mortgages.

1. An organization of countries formed in 1961 to agree on a common policy for the sale of petroleum.
2. A quantity of no importance.
3. A translucent mineral consisting of hydrated silica of variable color.
4. A radioactive element of the actinide series.
5. A small cake leavened with yeast.
6. A federal agency established to coordinate programs aimed at reducing pollution and protecting the environment.
7. A doctor's degree in education.
8. A town and port in northwestern Israel in the eastern Mediterranean.
9. United States physiologist (born in Germany) who did research on parthenogenesis (1859-1924).
10. (informal) Exceptionally good.
15. (British) A waterproof raincoat made of rubberized fabric.
19. A flexible container with a single opening.
20. An informal conversation.
22. An official prosecutor for a judicial district.
24. The cry made by sheep.
27. A river in north central Switzerland that runs northeast into the Rhine.
29. A small ball with a hole through the middle.
30. Informal terms for a mother.
32. A spoon-shaped vessel with a long handle.
33. A port in western Israel on the Mediterranean.
34. A federal agency established to coordinate programs aimed at reducing pollution and protecting the environment.
35. Any of various herbaceous plants of the genus Atriplex that thrive in deserts and salt marshes.
36. Greek mythology.
39. Any of numerous local fertility and nature deities worshipped by ancient Semitic peoples.
42. Aromatic bulb used as seasoning.
44. An undergarment worn by women to support their breasts.
45. The airforce of Great Britain.
47. A soft white precious univalent metallic element having the highest electrical and thermal conductivity of any metal.