Real Dictionary

celery
uncountable noun: Celery is a vegetable with long pale green stalks. It is eaten raw in salads.

celery in American English
a biennial plant (Apium graveolens var. dulce) of the umbel family, whose long, crisp leafstalks are eaten as a vegetable
noun: a plant, Apium graveolens, of the parsley family, whose leafstalks are eaten raw or cooked

celery in British English
noun: an umbelliferous Eurasian plant, Apium graveolens dulce, whose blanched leafstalks are used in salads or cooked as a vegetable

celery in Hospitality
noun: Celery is a vegetable with long, pale green stalks. It is eaten raw in salads.