1》 a tall, narrow building, either free-standing or forming part of another building such as a church or castle.
2》 a tall structure that houses machinery, operators, etc.
3》 a tall structure used as a receptacle or for storage.
1》 rise to or reach a great height: he ~ed over everyone else.
2》 (of a bird) soar up to a great height, especially (of a falcon) so as to be able to swoop down on prey.
~y adjective ( literary ).
OE torr , reinforced in ME by OFr. tour , from L. turris , from Gk.