A type of improvised grenade-like bomb used mainly in the first world war. Soldiers would use the empty tins from their ration of jam and fill it with explosives and shrapnel. Improvised jam tins often resemble the 'Double Cylinder Bomb' that was in use at the same time.
"I managed to kill two guys in trenches today using a couple of jam tins"
or
"Shit, a jam tin went off next to me and now I've got shrapnel stuck in my leg"
or
"Shit, a jam tin went off next to me and now I've got shrapnel stuck in my leg"
by flyingtele September 28, 2008
when a high school kid's parents are gone for the day but will return at night, he will have a day jam. It is a party during the day. Usually people will smoke pot or drink.
by bungmonkey February 04, 2011
by Beavis Bungwipe February 28, 2005
When you're stuck in traffic listening to the radio and you notice the car next to you listening to the same station. You both roll down your windows and start jamming.
I rolled up next to a guy in traffic today listening to the same song on the radio, so I rolled down the window and we started traffic jamming.
by chuckgregory February 25, 2010
by Guy, Evan January 21, 2007
by uttam maharjan July 10, 2012
Cindy at work is so hot she gave me a raging hard on. In order for anyone else not to see it I gave it a knob jam.
by Graven Sevagorn August 24, 2010