'Finishing coat' definitions:

Definition of 'finishing coat'

noun

The final coat of paint [syn: finish coat, finishing coat]

noun

The final coating of plaster applied to walls and ceilings; "we can't paint until they put on the finishing coat" [syn: finish coat, finishing coat]

From: GCIDE

Finishing \Fin"ish*ing\, a. Tending to complete or to render fit for the market or for use. [1913 Webster]
Finishing coat. (a) (Plastering) the final coat of plastering applied to walls and ceilings, usually white and rubbed smooth. (b) (Painting) The final coat of paint, usually differently mixed applied from the others.
Finishing press, a machine for pressing fabrics.
Finishing rolls (Iron Working), the rolls of a train which receive the bar from roughing rolls, and reduce it to its finished shape. --Raymond. [1913 Webster]