Dictionary

1jam

verb \ˈjam\

: to fill (a place) completely

: to fill (something, such as a door or a road) so that movement is slow or stopped

: to press or push (an object) into a tight place

jammedjam·ming

Full Definition of JAM

intransitive verb
1
a :  to become blocked or wedged
b :  to become unworkable through the jamming of a movable part
2
:  to force one's way into a restricted space
3
:  to take part in a jam session
4
:  dunk 2
transitive verb
1
a :  to press into a close or tight position <jam his hat on>
b (1) :  to cause to become wedged so as to be unworkable <jam the typewriter keys>
(2) :  to make unworkable by jamming
c :  to block passage of :  obstruct
d :  to fill often to excess :  pack <the crowd jammed the theater>
2
:  to push forcibly; especially :  to apply (brakes) suddenly and forcibly —used with on
3
:  crush, bruise
4
a :  to make unintelligible by sending out interfering signals or messages
b :  to make (as a radar apparatus) ineffective by jamming signals or by causing reflection of radar waves
5
:  to block, crowd, or bump (a pass receiver) near the line of scrimmage in football
6
:  to pitch inside to (a batter)
jam·mer \ˈja-mər\ noun

Examples of JAM

  1. Thousands of people jammed into the hall.
  2. People were jamming the exits after the concert.
  3. He jammed the book back into the bookcase.
  4. She jammed her foot down hard on the brakes.
  5. She jammed on the brakes.
  6. A piece of paper jammed the copy machine.

Origin of JAM

origin unknown
First Known Use: 1706

2jam

noun

Definition of JAM

1
a :  an act or instance of jamming
b :  a crowded mass that impedes or blocks <a traffic jam>
2
a :  the quality or state of being jammed
b :  the pressure or congestion of a crowd :  crush
3
:  a difficult state of affairs :  fix <got into a jam>
5
:  dunk shot
6
slang :  a musical piece

First Known Use of JAM

1805

3jam

noun

Definition of JAM

:  a food made by boiling fruit and sugar to a thick consistency
jam·my \ˈja-mē\ adjective

Origin of JAM

probably from 1jam
First Known Use: circa 1736

Other Food Terms

Reuben, calamari, chuck, curry, edamame, foie gras, hummus, leaven, nonpareil, peel

Jam

abbreviation

Definition of JAM

Jamaica
JAMMED Defined for Kids

1jam

verb \ˈjam\
jammedjam·ming

Definition of JAM for Kids

1
:  to crowd, squeeze, or wedge into a tight position <Fans jammed the auditorium.>
2
:  to put into action hard or suddenly <He jammed his hands into his pockets.> <She jammed on the brakes.>
3
:  to hurt by pressure <I jammed a finger in the car door.>
4
:  to be or cause to be stuck or unable to work because a part is wedged tight <Paper jammed the copier.>
5
:  to cause interference in (radio or television signals)

2jam

noun

Definition of JAM for Kids

:  a food made by boiling fruit with sugar until it is thick

3jam

noun

Definition of JAM for Kids

1
:  a crowded mass of people or things that blocks something <a traffic jam>
2
:  a difficult situation <I got myself into a jam.>

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