[ 'kju:pələ ]
■ noun
1》 a rounded dome forming or adorning a roof or ceiling.
2》 a gun turret.
3》 (also ~ furnace ) a cylindrical furnace for refining metals.
Derivatives
~ed -ləd adjective
Origin
C16: Ital., from late L. cupula 'small cask or burying vault', dimin. of cupa 'cask'.