A type of bell-shaped trap used in floor drains; its use is prohibited by the National Plumbing Code.

A small transformer which supplies power, at low voltage, for operating a doorbell or the like.

A device once used to summon servants in an elegant home; in each room, the bell pull consisted of a

In a run of piping, a joint formed with flexible metal bellows which compress or stretch to compensate for linear

In pier, caisson, or pile construction enlarging the base of a foundation element to increase its bearing area at the

Having a convex or bulging form.

A tower-like building for housing bells, esp. in Ireland.