Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
coastwise is an adjective and adverb meaning "along or following a coast". It carries 2 recorded senses.
along or following a coast
“coastal shipping”
“coastwise winds contributed to the storm”
by way of, or along the coast
“we were travelling coastwise”
Definitions, synonyms and semantic relations for coastwise come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.