Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
loonie is a noun meaning "the basic unit of money in Canada". It carries one recorded sense.
the basic unit of money in Canada
“the Canadian dollar has the image of loon on one side of the coin”
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 loonie come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.