Screw'-piles, n. pl.
(skrū'-), n. pl. Piles used to support light-houses, &c., forced into the ground and held firmly there by a peculiar kind of screw at the lower extremity.
(skrū'-), n. pl. Piles used to support light-houses, &c., forced into the ground and held firmly there by a peculiar kind of screw at the lower extremity.