1. South American wood sorrel cultivated for its edible tubers.
4. The probability of a specified outcome.
8. The compass point that is one point south of due east.
11. (computer science) Memory whose contents can be accessed and read but cannot be changed.
12. (Irish) Mother of the Tuatha De Danann.
13. (Scotland) A small loaf or roll of soft bread.
14. Large swift fly the female of which sucks blood of various animals.
16. A decree that prohibits something.
17. The compass point that is one point east (clockwise) of due north.
18. A member of a Turkic people of Uzbekistan and neighboring areas.
20. A silvery ductile metallic element found primarily in bauxite.
22. A radioactive element of the actinide series.
23. A river that rises in central Germany and flows north to join the Elbe River.
26. In bed.
28. A loose sleeveless outer garment made from aba cloth.
31. A long thin fluffy scarf of feathers or fur.
33. A flat wing-shaped process or winglike part of an organism.
35. A compartment in front of a motor vehicle where driver sits.
38. Old World wild swine having a narrow body and prominent tusks from which most domestic swine come.
44. A drug combination found in some over-the-counter headache remedies (Aspirin and Phenacetin and Caffeine).
45. A metric unit of volume or capacity equal to 10 liters.
47. Suggestive of the supernatural.
48. Scottish philosopher of common sense who opposed the ideas of David Hume (1710-1796).
50. Date used in reckoning dates before the supposed year Christ was born.
51. Something causes misery or death.
52. Someone who works (or provides workers) during a strike.
53. A white metallic element that burns with a brilliant light.
54. (Roman mythology) God of love.

1. God of the underworld.
2. Eurasian plant cultivated for its seed and as a forage crop.
3. Naked freshwater or marine or parasitic protozoa that form temporary pseudopods for feeding and locomotion.
4. A doctor's degree in optometry.
5. A light touch or stroke.
6. A nucleic acid consisting of large molecules shaped like a double helix.
7. The capital and largest city of Yemen.
8. The compass point that is one point north of due east.
9. A small cake leavened with yeast.
10. A detailed description of design criteria for a piece of work.
15. Offering fun and gaiety.
19. Cubes of meat marinated and cooked on a skewer usually with vegetables.
21. A gonadotropic hormone that is secreted by the anterior pituitary.
24. A federal agency established to regulate the release of new foods and health-related products.
25. An informal term for a father.
27. Angular distance above the horizon (especially of a celestial object).
29. A soft silvery metallic element of the alkali earth group.
30. A public promotion of some product or service.
32. Any of various spiny trees or shrubs of the genus Acacia.
34. Naked freshwater or marine or parasitic protozoa that form temporary pseudopods for feeding and locomotion.
36. A colorless and odorless inert gas.
37. The blood group whose red cells carry both the A and B antigens.
39. An organization of countries formed in 1961 to agree on a common policy for the sale of petroleum.
40. Type genus of the Alcidae comprising solely the razorbill.
41. A large quantity of written matter.
42. A river in central Italy rising in the Apennines and flowing through Florence and Pisa to the Ligurian Sea.
43. Someone whose job is to dye cloth.
46. The elementary stages of any subject (usually plural).
49. A logarithmic unit of sound intensity.