What is the meaning of Jammer?

Any device used to jam radio reception.

A musician who jams.

A device (e.g. a jumar) which will slide along a rope in one direction but not the other, used in rock-climbing, caving etc.

A player who attempts to score points by making their way past other players.

sorry

sorry, regretful

(to express) sorrow, dissatisfaction .

pitiful, sad condition or state of something.

too bad, unfortunately

unfortunate, sad

too bad, a pity

inflection of jammeren:

1. first-person singular present indicative
2. (in case of inversion) second-person singular present indicative
3. imperative

first-person singular present indicative

(in case of inversion) second-person singular present indicative

imperative

to jam; have a jam session

inflection of jammern:

1. first-person singular present
2. singular imperative

first-person singular present

singular imperative

Source: wiktionary.org