Marked by a large or well-developed chest(adjective)
WordNet. Princeton University. 2010.
Use "big-chested" in a sentence
""Ay, skipper," the Kanaka answered in the rich, big-chested tones of"
"All he wanted was to get my mother, this fair-skinned, big-chested, coy nightclub singer, in bed."
"Josephine, a big-chested, bubbling girl who liked Herbie enough to give him what he called 'a little slapping and tickling on the side ', was eager to oblige."