Word forms: plural, 3rd person singular presenttense birdies,  present participle birdying,  past tense, past participle birdied1. countable nounIn golf, if you get a birdie, you get the golf ball into a hole in one stroke fewer than the number of strokes which has been set as the standard for a good player.
 2. verbIf a golfer birdies a hole, he or she gets a birdie at that hole.
 He birdied five of the first seven holes. [VERB noun]