A trademark registered to Gerber Childrenswear LLC, often used in connection with a one-piece garment for an infant or small child, generally worn over a diaper.
The child wore a Gerber Onesies garment.
by Onesies March 26, 2009
Photos & Videos
Top Definition
Onesie comes from the word "one" and means a one-piece suit, usually in the form you use for lazy days at home. It is also used for one-piece snowsuits and one-piece motorcycle suits. The word is sometimes spelled onesy.

The name may be derived from the registered trademark Onesies®, which is a range of clothes for infant children. The word onesie (in singular) does however, in modern usage, more often mean a suit in adult size.
When I come home from work, I just like to change into my onesie and watch TV.
by EliasG June 04, 2013
The most comfortable thing one can wear, there is no denying it.
Sally experienced a cozy wonderland as she put on her fuzzy onesie.
by Cosmello January 11, 2015
A selfie taken by HM the Queen
One has taken a onesie on one's mobile
by cousinjack49 March 16, 2014
a single cigarette sold over the counter by a retail establishment, instead of a pack of 20. useful in New York if you don't have the $8 for a pack. also useful for the quitting smoker who just needs one nicotine hit to take the edge off. onesie's are illegal in some states - eg Illinois 2009
"he sold me a onesie with a cup of coffee"
by mak108 August 22, 2009
When a girl is so tight, you can only fit one finger in her.
Emma's a Onesie!
by Lateofthepier October 20, 2009
A self rolled spliff that is the size of a rollie cigarette, using one regular sized rolling paper/skin.
Dave: Is there any weed left?
John: Nah man, not even enough for a onesie.
Dave: :(
by Kempernol January 08, 2008
to masturbate, have sex with oneself, to commit onanism
...and I caught that bitch having a onesie in the middle of the tennis court.
by BabyA December 09, 2005
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.