D defs.my
Entry 1 sense Webster, 1913

Baby jumper

/bāb'-ē jŭm'-pẽr/ · Ba·by jump·er · IPA
01 A hoop suspended by an elastic strap, in which a young child may be held secure while amusing itself by jumping on the floor.
  1. 1.
    A hoop suspended by an elastic strap, in which a young child may be held secure while amusing itself by jumping on the floor.