1. Metal device shaped in such a way that when it is inserted into the appropriate lock the lock's mechanism can be rotated Noun
2. Something crucial for explaining Noun
3. Pitch of the voice Noun
4. Any of 24 major or minor diatonic scales that provide the tonal framework for a piece of music Noun
5. A kilogram of a narcotic drug Noun
6. A winged often one-seed indehiscent fruit as of the ash or elm or maple Noun
7. United States lawyer and poet who wrote a poem after witnessing the British attack on Baltimore during the War of 1812; the poem was later set to music and entitled The Star-Spangled Banner' (1779-1843) Noun
8. A coral reef off the southern coast of Florida Noun
9. (basketball) a space (including the foul line) in front of the basket at each end of a basketball court; usually painted a different color from the rest of the court Noun
10. A list of answers to a test Noun
11. A list of words or phrases that explain symbols or abbreviations Noun
12. A generic term for any device whose possession entitles the holder to a means of access Noun
13. Mechanical device used to wind another device that is driven by a spring (as a clock) Noun
14. The central building block at the top of an arch or vault Noun
15. A lever (as in a keyboard) that actuates a mechanism when depressed Noun
16. Serving as an essential component Adjective Satellite
17. Identify as in botany or biology, for example Verb
18. Provide with a key Verb
19. Vandalize a car by scratching the sides with a key Verb