Dictionary

key word

noun

Definition of KEY WORD

:  a word that is a key: as
a :  a word exemplifying the meaning or value of a letter or symbol
b usually key·word \-ˌwərd\ :  a significant word from a title or document used especially as an index to content

First Known Use of KEY WORD

1859

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May 23, 2015
debouch Hear it
to emerge or cause to emerge
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