1. A trivial lie.
4. A law passed by US Congress to prevent employees from being injured or contracting diseases in the course of their employment.
8. (Judaism) Sacred chest where the ancient Hebrews kept the two tablets containing the Ten Commandments.
11. An agency of the United Nations affiliated with the World Bank.
12. Any of a number of fishes of the family Carangidae.
13. The syllable naming the sixth (submediant) note of a major or minor scale in solmization.
14. Not of long duration.
15. A rotating disk shaped to convert circular into linear motion.
17. A midnight meeting of witches to practice witchcraft and sorcery.
20. The sense organ for hearing and equilibrium.
22. An organization of countries formed in 1961 to agree on a common policy for the sale of petroleum.
27. A small pellet fired from an air rifle or BB gun.
28. A communist state in the Caribbean on the island of Cuba.
31. Aircraft landing in bad weather in which the pilot is talked down by ground control using precision approach radar.
32. A fatal disease of cattle that affects the central nervous system.
34. A soft silvery metallic element of the alkali earth group.
36. Extremely pleasing.
39. Harsh or corrosive in tone.
40. (comparative of `little' usually used with mass nouns) Quantifier meaning not as great in amount or degree.
43. (Akkadian) God of wisdom.
44. The bill in a restaurant.
47. A loose sleeveless outer garment made from aba cloth.
48. A Chadic language spoken south of Lake Chad.
49. (Irish) Mother of the ancient Irish gods.

1. A shoe for swimming.
2. The content of cognition.
3. An old Scottish coin of little value.
4. An annual award by the Academy of Motion Picture Arts and Sciences for achievements in motion picture production and performance.
5. Singing jazz.
6. Thigh of a hog (usually smoked).
7. A public promotion of some product or service.
8. By bad luck.
9. A rapid series of short loud sounds (as might be heard with a stethoscope in some types of respiratory disorders).
10. An inn in some Eastern countries with a large courtyard that provides accommodation for caravans.
16. A master's degree in business.
18. An indehiscent fruit derived from a single ovary having one or many seeds within a fleshy wall or pericarp.
19. A plant hormone promoting elongation of stems and roots.
21. (informal) Exceptionally good.
23. A soft heavy toxic malleable metallic element.
24. The blood group whose red cells carry both the A and B antigens.
25. A rare silvery (usually trivalent) metallic element.
26. A bachelor's degree in religion.
29. An official prosecutor for a judicial district.
30. Tropical American trees with palmately compound leaves and showy bell-shaped flowers.
33. Someone who works (or provides workers) during a strike.
35. Type genus of the Alcidae comprising solely the razorbill.
36. Before noon.
37. (in Gnosticism) A divine power or nature emanating from the Supreme Being and playing various roles in the operation of the universe.
38. A small cake leavened with yeast.
41. 30 to 300 gigahertz.
42. Relating to or characteristic of or occurring on the sea or ships.
45. Before noon.
46. The syllable naming the fourth (subdominant) note of the diatonic scale in solmization.