Define Flat Chested Meaning

A woman/girl with very small or no breasts. Usually seen as a curse but some people like the lack of boobs.

some one who is a part of the "ITTY BITTY TITTY COMITTIY"
in other words, very small breasts.
boobless.

Flatchestsed,

Very very small boobs or no boobs at all
Any thing less than a C cup

(1) a female's upper torso with no or little curvature, having no or very small breasts;
(2) a female with such a chest, or more regularly, who is thought to have a flat chest, but actually just has A or B cups.
Usually meant as an insult or self-deprecating remark, but reclaimed by some as a source of pride and self-worth.

having little or no female breast development

a women without boobs

A girl with absolutely no boobs who often likes to pack her bra to make it seem different

A girl with no boobs. It’s pretty bad when her ribcage sticks out farther than her boobs.

When a girl's chest is flatter than a board of wood

A girl that is so flat chested that she is often mistaken for a guy.