Noun
One who tumbles; one who plays tricks by various motions of the body; an acrobat.
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.
Source: Webster's dictionaryAnd perhaps there is a limit to the grieving that the human heart can do. As when one adds salt to a tumbler of water, there comes a point where simply no more will be absorbed. Sarah Waters
Livin' is like pourin' water out of a tumbler into a dang Coca-Cola bottle. If'n you skeered you can't do it, you cain't. If'n you say to yourself, "By dang, I can do it!" then, by dang, you won't slosh a drop. Olive Ann Burns
Pouter, tumbler and fantail are from the same source; The racer and hack may be traced to one horse; So men were developed from monkeys of course, Which nobody can deny. Charles Neaves
According to Lord Moran, during the war years Churchill sought solace in his tumbler of whisky and soda and his cigar. Source: Internet
Cases that are dirty or tarnished are often polished in a tumbler to remove oxidation and allow easier inspection of the case. Source: Internet
Most dryers consist of a rotating drum called a tumbler through which heated air is circulated to evaporate the moisture from the load. Source: Internet