hard-on
noun
ˈhärd-ˌȯn 
-ˌän
plural hard-ons
slang, sometimes vulgar
: an erection of the penis
Word History
First Known Use
1888, in the meaning defined above
- in sync
- in synchrony with
- in syndication
- in tandem
- in tatters
- in tears
- in tempo
- in terminal decline
- in terms of
- in that
- in that case
- in that regard
- in that/this regard
- in the (first) flush of
- in the absence of
- in the abstract
- in the act
- in the act (of doing something)
- in the act of doing something
- in the affirmative
- in the aggregate
- in the air
- in the altogether
- in the area of
- in the arms of