say it: BUR-dee
birdie is a noun and verb meaning "(golf) a score of one stroke under par on a hole". It carries 3 recorded senses.
badminton equipment consisting of a ball of cork or rubber with a crown of feathers
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 birdie come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.