Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
summersault is a noun meaning "an acrobatic feat in which the feet roll over the head (either forward or backward) and return". It carries one recorded sense.
an acrobatic feat in which the feet roll over the head (either forward or backward) and return
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 summersault come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.