'Trestletree' definitions:

Definition of 'Trestletree'

From: GCIDE

Trestletree \Tres"tle*tree`\, n. (Naut.) One of two strong bars of timber, fixed horizontally on the opposite sides of the masthead, to support the crosstrees and the frame of the top; -- generally used in the plural. --Totten. [1913 Webster]