Noun
Name given to a number of one-piece attires
(US) A one-piece garment for an infant or small child, generally worn over a diaper.
One-piece adult loungewear jumpsuit.
One-piece fashionable streetwear worn mostly by teenagers.
Source: en.wiktionary.orgI worked in Tesco's staff canteen because I fancied a boy on the tills. I served him his lunch in a hairnet and tan tights. Not just that, of course - I had a lovely white onesie. Lena Headey
After exchanging pleasantries, Warren picked up the newborn, whose salmon onesie nearly matched the sweater Warren was wearing. Source: Internet
Another claim made by Grant Gustin and the costume design team for is that the suit in season 2 is a lot easier to put on than the season 6 that is like a onesie. Source: Internet
Elizabeth put a bright pink onesie on the 6-pound, 13-ounce baby and wrapped her in a fluffy pink blanket adorned with entwined gold hearts. Source: Internet
Beyonce can be seen wearing a brown onesie adorned with crescents as she performs with a number of backup dancers. Source: Internet
Nikki and Artem both wore casual, black tops while baby Matteo wore an adorable white onesie, with moon and stars imagery designed on the front. Source: Internet