Key

metal device shaped in such a way that when it is inserted into the appropriate lock the lock's mechanism can be rotated

something crucial for explaining

pitch of the voice

any of 24 major or minor diatonic scales that provide the tonal framework for a piece of music

a kilogram of a narcotic drug

a winged often one-seed indehiscent fruit as of the ash or elm or maple

United States lawyer and poet who wrote a poem after witnessing the British attack on Baltimore during the War of 1812

a coral reef off the southern coast of Florida

(basketball) a space (including the foul line) in front of the basket at each end of a basketball court

a list of answers to a test

a list of words or phrases that explain symbols or abbreviations

a generic term for any device whose possession entitles the holder to a means of access

mechanical device used to wind another device that is driven by a spring (as a clock)

the central building block at the top of an arch or vault

a lever (as in a keyboard) that actuates a mechanism when depressed

identify as in botany or biology, for example

provide with a key

vandalize a car by scratching the sides with a key

regulate the musical pitch of

harmonize with or adjust to

serving as an essential component