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."
Attach point for topmast and t'gallantmast.
Spreaders. Small spars extending toward the sides from one or more places along the mast. The shrouds cross the end of the spreaders, enabling the shrouds to better support the mast.
Lateral spreaders for the topmast shrouds which, on the barge, are called standing backstays.
horizontal timbers at right angles which support the centre post of a post mill
A wooden platform partway up a mast to keep the shrouds spread apart.
Crosstrees are the two horizontal struts at the upper ends of the topmasts of sailboats, used to anchor the shrouds from the topgallant mast. Similarly, they may be mounted at the upper end of the topgallant to anchor the shrouds from the royal mast (if fitted).