skainsmate

n. [ Perhaps originally, a companion in winding thread (see Skein), or a companion in arms, from skain a sword (see Skean). ] A messmate; a companion. [ Obs. ] [ 1913 Webster ]

Scurvy knave! I am none of his firt-gills; I am none of his skainsmates. Shak. [ 1913 Webster ]