Did you perhaps mean boastful?
Definitions
Wiktionary
- n. the amount that a breast will carry or hold.
Etymologies
- breast + -ful (Wiktionary)
Examples
“Mullen, in his dress blues with a breastful of ribbons and the gold braid of a full admiral—one thick and three thin around each forearm above the wrist—felt he had successfully reached out to the Illinois senator.”
“It leaves the viewer with a breastful of unresolved emotions, questions and daydreams about The Show That Never Was, which is testament to how appealing this opening chapter really is.”
“And again he inhaled a prodigious breastful of the mountain air.”
“He wished Mr. Durance could behold it now and have such a breastful.”
Lists
These user-created lists contain the word ‘breastful’.
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Nice colloquialisms / my idiolect
hack rag, duck, irrelephant, golly, cripes, struth, breastful, i like cheese, lostwithiel, shiny, spiffer, spifftastic and 17 more...
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OED Rare Words
Words designated rare (but not obsolete) in the OED.
accusatrix, adherescent, armipotence, aquose, arabicism, ardentness, arcifinious, arcuate, arenosity, armillated, artificer, artolater and 88 more...
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Private Slang
Words used amongst friends.
Tweets
Looking for tweets for breastful.

prolixpolymath a bobbering broastful bouncing boonty on bisplay Dec 31, 2008
holnrew Something excellent. As breasts are excellent. Dec 23, 2008