Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
breaststroke is a noun and verb meaning "a swimming stroke; the arms are extended together in front of the head and swept back on either side accompanied by a frog kick". It carries 2 recorded senses.
a swimming stroke; the arms are extended together in front of the head and swept back on either side accompanied by a frog kick
swim with the face down and extend the arms forward and outward while kicking with the leg
water sport
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for breaststroke come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.