Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
sign-language is an adjective meaning "used of the language of the deaf". It carries one recorded sense.
used of the language of the deaf
Definitions, synonyms and semantic relations for sign-language come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.