Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
brassbound is an adjective meaning "inflexibly entrenched and unchangeable". It carries 2 recorded senses.
inflexibly entrenched and unchangeable
“brassbound traditions”
“brassbound party loyalists”
“an ironclad rule”
having trim or fittings of brass
“a brassbound campaign chest”
“the heavy brassbound door”
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 brassbound come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.