Wiktionary
a. (alternative spelling of flat-chested English)
Usage examples of "flatchested".
He called her a flatchested hophead and said that she was lying, because he had been taking a bath every day.
In fact, almost as flatchested as Jalila still was, and probably of about her age and height.
Gavin clenched his teeth and struggled, as he noticed, inconsequentially, that Elaine was not as flatchested as he had supposed.
Has any fellow, of the dime a dozen type, it might with some profit some dull evening quietly be hinted--has any usual sort of ornery josser, flatchested fortyish, faintly flatulent and given to ratiocination by syncopation in the elucidation of complications,of his greatest Fung Yang dynasdescendanced,only another the son of, in fact, ever looked sufficiently longly at a quite everydaylooking stamped addressed envelope?