1) A belt or strap, often made of leather, used to support a sword or, as here, to bear heavy weights, especially to suspend the clapper of a church bell.
1401-2 In baudrikes factis de telis equorum cum basts emptis pro portagio lapidum, York
1520 payd for a baldrege to the secund bell vjd, York
1538 for makyng iii bawdregs for the bells, Sheriff Hutton. Note the spelling ‘bawtry’: 1540-1 for helpyng off ij bawtrys off the belles, vijd, York.