'Crosstrees' definitions:
Definition of 'Crosstrees'
From: GCIDE
- Crosstrees \Cross"trees`\ (-tr?z`), n. pl. (Naut.) Pieces of timber at a masthead, to which are attached the upper shrouds. At the head of lower masts in large vessels, they support a semicircular platform called the "top." [1913 Webster]