Definitions for daybedˈdeɪˌbɛd
Random House Webster's College Dictionary
a couch that can be used as a sofa by day and a bed by night.
a couch, esp. of the 17th or 18th century, in the form of a chaise longue.
Origin of daybed:
daybed, divan bed(noun)
an armless couch; a seat by day and a bed by night
chaise longue, chaise, daybed(noun)
a long chair; for reclining
a couch that can be used as a sofa by day and a bed by night
long chair for reclining