资料来源 : Webster's Revised Unabridged Dictionary (1913)
Jumper \Jump"er\, n.
1. One who, or that which, jumps.
2. A long drilling tool used by masons and quarrymen.
3. A rude kind of sleigh; -- usually, a simple box on runners
which are in one piece with the poles that form the
thills. [U.S.] --J. F. Cooper.
4. (Zo["o]l.) The larva of the cheese fly. See {Cheese fly},
under {Cheese}.
5. (Eccl.) A name applied in the 18th century to certain
Calvinistic Methodists in Wales whose worship was
characterized by violent convulsions.
6. (Horology) spring to impel the star wheel, also a pawl to
lock fast a wheel, in a repeating timepiece.
{Baby jumper}. See in the Vocabulary.
{Bounty jumper}. See under {Bounty}.
Baby jumper \Ba"by jump`er\
A hoop suspended by an elastic strap, in which a young child
may be held secure while amusing itself by jumping on the
floor.