Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
gaol is a noun and verb meaning "a correctional institution used to detain persons who are in the lawful custody of the government (either accused persons awaiting trial or convicted persons serving a sentence)". It carries 2 recorded senses.
lock up or confine, in or as in a jail
“The suspects were imprisoned without trial”
“the murderer was incarcerated for the rest of his life”
law
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 gaol come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.