What's a "teddy" in clothing?

[pulykamell]

@Inner_Stickler

Lingerie. I don’t know if it’s any particular type or just a general term for a (naughty?) nightgown.

I’ve always known it as a one-piece. Dictionary.com says:

ted⋅dy  [ted-ee] Show IPA
–noun, plural -dies.

1. Often, teddies. a woman’s one-piece undergarment combining a chemise and underpants, sometimes having a snap crotch.