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.
a particular time, especially as marked by certain circumstances or occurrences: They met on three occasions. a special or important time, event, ceremony, celebration, etc.: His birthday will be quite an occasion.