Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
tug-of-war is a noun meaning "any hard struggle between equally matched groups". It carries 2 recorded senses.
any hard struggle between equally matched groups
a contest in which teams pull of opposite ends of a rope; the team dragged across a central line loses
Definitions, synonyms and semantic relations for tug-of-war come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.