legal Definition of floor 1 a: a main level space (as in a stock exchange or legislative chamber) distinguished from a platform or gallery b: members of an assembly
Learner's definition of BIRTHDAY. [count]. 1. : the day when someone was born or the anniversary of that day. â often used before another noun.
Wiktionary(5.00 / 1 vote)Rate this definition: 1  celebrate(Verb) To extol or honour in a solemn manner. to celebrate the name of the Most High. 2  celebrate(Verb) To honour by rites, by ceremonies of joy and respect, or by refraining from ordinary business; to observe duly; to keep. to celebrate a birthday.