'Portoir' definitions:

Definition of 'Portoir'

From: GCIDE

Portoir \Por"toir\, n. [OF., fr. porter to bear.] One who, or that which, bears; hence, one who, or that which, produces. [Obs.] [1913 Webster]
Branches . . . which were portoirs, and bare grapes. --Holland. [1913 Webster]