A movable obstruction in a lock, consisting of a lever,
latch, wheel, slide, or the like, which must be adjusted to a
particular position by a key or other means before the bolt can be
thrown in locking or unlocking.

A piece attached to, or forming part of, the hammer of a
gunlock, upon which the mainspring acts and in which are the notches
for sear point to enter.

A drinking glass, without a foot or stem; – so called
because originally it had a pointed or convex base, and could not be
set down with any liquor in it, thus compelling the drinker to finish
his measure.

A variety of the domestic pigeon remarkable for its habit
of tumbling, or turning somersaults, during its flight.

A breed of dogs that tumble when pursuing game. They were
formerly used in hunting rabbits.

A kind of cart; a tumbrel.