Definition of "crost"

Them claims marked with a crost belongs to th' Company.

1901, Stewart Edward White, The Claim Jumpers‎

[…] I did espie Where towards me a sory wight did cost*, Clad all in black, that mourning did bewray, And Iacob staffe in hand devoutly crost, Like to some pilgrim come from farre away.

1591, Edmund Spenser, The Poetical Works of Edmund Spenser, Volume 5‎