(~s, ~ming, ~med)
1.
Jam is a thick sweet food that is made by cooking fruit with a large amount of sugar, and that is usually spread on bread. (mainly BRIT; in AM, usually use jelly )
...home-made ~.
N-MASS
2.
If you ~ something somewhere, you push or put it there roughly.
He picked his cap up off the ground and ~med it on his head...
Pete ~med his hands into his pockets.
VERB: V n prep, V n prep
3.
If something such as a part of a machine ~s, or if something ~s it, the part becomes fixed in position and is unable to move freely or work properly.
The second time he fired his gun ~med...
A rope ~med the boat’s propeller...
Cracks appeared in the wall and a door ~med shut...
The intake valve was ~med open...
Every few minutes the motor cut out as the machinery became ~med.
VERB: V, V n, V adj, be V-ed adj, V-ed, also V n adj
4.
If vehicles ~ a road, there are so many of them that they cannot move.
Hundreds of departing motorists ~med the roads.
VERB: V n
•
Jam is also a noun.
Trucks sat in a ~ for ten hours waiting to cross the bridge.
N-COUNT
~med
Nearby roads and the dirt track to the beach were ~med with cars.
ADJ: oft ADJ with n
5.
If a lot of people ~ a place, or ~ into a place, they are pressed tightly together so that they can hardly move.
Hundreds of people ~med the boardwalk to watch...
They ~med into buses provided by the Red Cross and headed for safety.
= cram
VERB: V n, V into n
~med
The stadium was ~med and they had to turn away hundreds of disappointed fans.
= packed
ADJ
6.
To ~ a radio or electronic signal means to interfere with it and prevent it from being received or heard clearly.
They will try to ~ the transmissions electronically.
VERB: V n
~ming
The plane is used for electronic ~ming and radar detection.
N-UNCOUNT: usu with supp
7.
If callers are ~ming telephone lines, there are so many callers that the people answering the telephones find it difficult to deal with them all.
Hundreds of callers ~med the BBC switchboard for more than an hour...
VERB: V n
8.
When jazz or rock musicians are ~ming, they are informally playing music that has not been written down or planned in advance. (INFORMAL)
He was ~ming with his saxophone.
VERB: V
•
Jam is also a noun.
...a ~ session.
N-COUNT
9.
see also traffic ~