[bel.fry] n, pl belfries [ME belfrey, alter. of berfrey, fr. MF berfrei bell tower, siege tower, of Gmc origin (akin to MHG bervrit siege tower); akin to OHG bergan to shelter and to OE frith peace, refuge--more at bury] (15c) 1: a bell tower; esp: one surmounting or attached to another structure
2: a room or framework for enclosing a bell
3: head 2a "batty in the ~"