Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
half-track is an adjective meaning "having caterpillar treads on the rear and wheels in front". It carries one recorded sense.
having caterpillar treads on the rear and wheels in front
“half-track armored vehicles”
Definitions, synonyms and semantic relations for half-track come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.