\Fu"ttock\, n. [Prob. corrupted fr. foothook.] (Naut.)
One of the crooked timbers which are scarfed together to form
the lower part of the compound rib of a vessel; one of the
crooked transverse timbers passing across and over the keel.
{Futtock plates} (Naut.), plates of iron to which the
   dead-eyes of the topmast rigging are secured.
{Futtock shrouds}, short iron shrouds leading from the upper
   part of the lower mast or of the main shrouds to the edge
   of the top, or through it, and connecting the topmast
   rigging with the lower mast. --Totten.