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-evergreen is an adjective meaning "of a plant that is incompletely evergreen". It carries one recorded sense.
of a plant that is incompletely evergreen
“it was evergreen where the weather was mild but deciduous in the rigorous parts of the range”
Definitions, synonyms and semantic relations for half-evergreen come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.