[oh-nuh-niz-uh m] /ˈoʊ nəˌnɪz əm/
withdrawal of the penis in sexual intercourse so that ejaculation takes place outside the vagina; coitus interruptus.
another name for masturbation, coitus interruptus
“masturbation,” also “coitus interruptus,” 1727, from Onan, son of Judah (Gen. xxxviii:9), who spilled his seed on the ground rather than impregnate his dead brother’s wife: “And Onan knew that the seed should not be his; and it came to pass, when he went in unto his brother’s wife, that he spilled it on the ground, lest that he should give seed to his brother.” The moral of this verse was redirected by those who sought to suppress masturbation.
onanism o·nan·ism (ō’nə-nĭz’əm)
- On a par with
As good as, equal to, as in This violinist may be an amateur but he’s on a par with professional orchestral players. The noun par has meant “that which is equal” since the mid-1600s; the idiom here was first recorded in 1832.
- On a plate
adverb without requiring any effort on the part of the recipient Examples They handed him the world on a plate. Usage Note slang adverb In an easy situation; easily acquired: a win on a plate (1935+)
- On a rampage
Behaving violently, as in There was a near riot after the game, when some of the spectators went on a rampage. This term comes from the Old Scots verb ramp, meaning “to storm and rage.” [ Mid-1800s ]
- On a shingle
Related Terms shit on a shingle