Definition of keychain drive in English:

keychain drive

Syllabification: key·chain drive
Pronunciation: /ˌkēˌCHān ˈdrīv/

Entry from US English dictionary

noun

Computing
Another term for USB flash drive.

Definition of keychain drive in:

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Word of the day apposite
Pronunciation: ˈapəzit
adjective
apt in the circumstances or relation to something