Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
runproof is an adjective meaning "(of hosiery) resistant to runs or (in Britain) ladders". It carries one recorded sense.
(of hosiery) resistant to runs or (in Britain) ladders
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 runproof come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.