Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
outercourse is a noun meaning "sexual stimulation without vaginal penetration". It carries one recorded sense.
sexual stimulation without vaginal penetration
“since pregnancy cannot happen if sperm are kept out of the vagina, outercourse is one method of birth control”
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 outercourse come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.