Jamming

Jamming may mean:

Techniques to limit the effectiveness of an opponent's
communications and/or detection equipment.

Radio jamming

Radar jamming

Mobile phone jammer

In physics, the term jamming is used for apparent
changes of state; for example, a granular medium
suddenly acting like a solid.

E-mail jamming, used by electronic political activists
or hackers to disable e-mail systems

Jamming (fanzine), a late 1970s to early 1980s UK music
fanzine edited by Tony Fletcher.

Jamming (or jam session), an informal, semi-improvised
performance by a group of rock or jazz musicians.

Jamming (dance), cheered show-offs during socialdancing.
A set of climbing moves that involve wedging a body part
into a crack when rock climbing.

Culture jamming, the act of using existing mass media to
comment on those very media themselves, using the
original medium's communication method.

Jamming, a song by Bob Marley from the Album, Exodus
(album). Can also be "slang" for "chilling or "hanging
around", widely known in the UK.