(1):

(p. pr. & vb. n.) of Ceil

(2):

(v. t.) The inner planking of a vessel.

(3):

(v. t.) The inside lining of a room overhead; the under side of the floor above; the upper surface opposite to the floor.

(4):

(v. t.) The lining or finishing of any wall or other surface, with plaster, thin boards, etc.; also, the work when done.