I. ˈjamə(r), -aam- noun
( -s )
Etymology: jam (I) + -er
: one that jams: as
a.
(1) : a vehicular hoist used to load logs by animal or tractor power
(2) : one that operates such a jammer
b. : a usually modulated transmitter that emits a signal that is intended to interfere with or make unintelligible radio or radar signals
II. noun
: a player on a roller derby team who attempts to score during a jam