/ ˈdɪki; NAmE / adjective , noun
■ adjective
( old-fashioned , BrE , informal ) not healthy; not working correctly :
a dicky heart
■ noun
(also dickey ) ( pl. dickies or dickeys ) ( IndE ) the boot / trunk of a car
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WORD ORIGIN
late 18th cent. (in the sense almost over ): perhaps from the given name Dick , in the old saying as queer as Dick's hatband .