Key

serving as an essential component

(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

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

a kilogram of a narcotic drug

a list of answers to a test

pitch of the voice

something crucial for explaining

a coral reef off the southern coast of Florida

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

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 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; the poem was later set to music and entitled `The Star-Spangled Banner' (1779-1843)

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

a list of words or phrases that explain symbols or abbreviations

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

harmonize with or adjust to

provide with a key

vandalize a car by scratching the sides with a key

identify as in botany or biology, for example

regulate the musical pitch of