As nouns the difference between short and dumbbell
is that
short is a short circuit while
dumbbell is (weightlifting) a weight consisting of two disks or spheres attached to a short bar; used for exercise and weight training.
As an adjective short
is having a small distance from one end or edge to another, either horizontally or vertically.
As an adverb short
is abruptly, curtly, briefly.
As a verb short
is to cause a in (something).
As a preposition short
is deficient in.