(1):

(n.) Oaken timber or boarding.

(2):

(n.) Any one of numerous species of European moths of the family Leucanidae.

(3):

(v. t.) To line with boards or panelwork, or as if with panelwork; as, to wainscot a hall.

(4):

(n.) A wooden lining or boarding of the walls of apartments, usually made in panels.