Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
sandglass is a noun meaning "timepiece in which the passage of time is indicated by the flow of sand from one transparent container to another through a narrow passage". It carries one recorded sense.
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 sandglass come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.