topcastle

[ top-kas-uh l, -kah-suh l ]
/ ˈtɒpˌkæs əl, -ˌkɑ səl /

noun

a large fighting top used in medieval ships.

Origin of topcastle

First recorded in 1300–50, topcastle is from the Middle English word top-castel. See top1, castle
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019