From WordNet (r) 3.0 (2006) [wn]:
campanile
n 1: a bell tower; usually stands alone unattached to a building
[syn: campanile, belfry]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Campanile \Cam`pa*ni"le\, n. [It. campanile bell tower, steeple,
fr. It. & LL. campana bell.] (Arch.)
A bell tower, esp. one built separate from a church.
[1913 Webster]
Many of the campaniles of Italy are lofty and
magnificent structures. --Swift.
[1913 Webster]