Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
assay-mark is a noun meaning "a mark on an article of trade to indicate its origin and authenticity". It carries one recorded sense.
a mark on an article of trade to indicate its origin and authenticity
Definitions, synonyms and semantic relations for assay-mark come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.