HAMMERABLE
Ham"mer*a*ble, a.

Defn: Capable of being formed or shaped by a hammer. Sherwood.

HAMMER-BEAM
Ham"mer-beam`, n. (Cothic Arch.)

Defn: A member of one description of roof truss, called hammer-beam truss, which is so framed as not to have a tiebeam at the top of the wall. Each principal has two hammer-beams, which occupy the situation, and to some extent serve the purpose, of a tiebeam.

HAMMER BREAK
Ham"mer break. (Elec.)

Defn: An interrupter in which contact is broken by the movement of an automatically vibrating hammer between a contact piece and an electromagnet, or of a rapidly moving piece mechanically driven.

HAMMERCLOTH Ham"mer*cloth`, n. Etym: [Prob. fr. D. hemel heaven, canopy, tester (akin to G. himmel, and perh. also to E. heaven) + E. cloth; or perh. a corruption of hamper cloth.]

Defn: The cloth which covers a coach box.

HAMMER-DRESSED
Ham"mer-dressed`, a.

Defn: Having the surface roughly shaped or faced with the stonecutter's hammer; — said of building stone.