Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
launce is a noun meaning "very small silvery eellike schooling fishes that burrow into sandy beaches". It carries one recorded sense.
very small silvery eellike schooling fishes that burrow into sandy beaches
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 launce come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.