hard-on

noun
\ˈhärd-ˌȯn, -ˌän\
plural hard-ons

Definition of hard-on 

slang, sometimes vulgar

: an erection of the penis

First Known Use of hard-on

1888, in the meaning defined above

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The first known use of hard-on was in 1888

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More Definitions for hard-on

hard-on

noun

English Language Learners Definition of hard-on

: an erection of the penis

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