hard-on

[hahrd-on, -awn] /ˈhɑrdˌɒn, -ˌɔn/
noun, plural hard-ons. Slang: Vulgar.
1.
an erection of the penis.
Origin
1890-95
Word Origin and History for hard on
n.

"penile erection," 1893, from hard + on.

Slang definitions & phrases for hard on

hard-on

noun
  1. An erection of the penis: It was another one of those subway things. Like having a hard-on at random (1893+)
  2. A severe and intolerant person, esp a martinet leader or superior: Stone is turning into a world-class hard-on (1980s+)
Related Terms

have a hard-on for someone or something


Idioms and Phrases with hard on

hard on

.
Also, hard upon, hard by. In close proximity, as in The police were hard on the heels of the thieves, or It was hard upon three o'clock, or Their house is hard by ours. The variants are used less than hard on. [ Second half of 1700s ]
.
be hard on. Deal severely with, cause damage to. For example, He asked the teacher not to be too hard on those who forgot the assignment, or That cat has really been hard on the upholstery. [ Second half of 1600s ]
Also see: hard time, def. 2.