Category:Transom

Tran"som, n. Etym: [probably fr. L. transtrum a crossbeam, transom, From trans across. Cf. Trestle.]

1. (arch.)

Defn: a horizontal crossbar in a window, over a door, or between a Door and a window above it. Transom is the horizontal, as mullion is The vertical, bar across an opening. See illust. of mullion.

2. (naut.)

Defn: one of the principal transverse timbers of the stern, bolted to The sternpost and giving shape to the stern structure; -- called also Transsummer.

3. (gun.)

Defn: the piece of wood or iron connecting the cheeks of some gun Carriages.

4. (surg.)

Defn: the vane of a cross-staff. Chambers.

5. (railroad)

Defn: one of the crossbeams connecting the side frames of a truck With each other. Transom knees (shipbuilding), knees bolted to the Transoms and after timbers. -- transom window. (arch.) (a) a window divided horizontally by a Transom or transoms. (b) a window over a door, with a transom Between.