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1.
The word 'penis' misspelled backwards, making its user look like a douche.
- Man, that guy is such a goddamn senip.

- Senip? Is that, as in, 'pines' spelt backwards? Yeah, I think you're right. With legs like those, he /would/ make decent softwood.

- Smartass.
by RedRed22 April 22, 2009
 
2.
the word penis spelled backwards,also carrying the same meaning as that word. Often used in place of the word penis when a person doesnt want certian people to know what they are talking about.
Hey Bob, show her your senip.

I don't like that kid, he is such a senip.
by rowidzz September 18, 2004