n. 25B6; verb
he jammed a finger in each ear : STUFF, shove, force, ram, thrust, press, push, stick, squeeze, cram.
hundreds of people jammed into the hall : CROWD, pack, pile, press, squeeze, cram; throng, mob, occupy, fill, overcrowd, obstruct, block, clog, congest.
the rudder had jammed : STICK, become stuck, catch, seize (up), become trapped.
dust can jam the mechanism : IMMOBILIZE, paralyse, disable, cripple, put out of action, bring to a standstill.
25B6; noun
a traffic jam : TAILBACK, hold-up, congestion, bottleneck; N. Amer. gridlock; informal snarl-up.
(informal) we are in a real jam : PREDICAMENT, plight, tricky situation, difficulty, problem, quandary, dilemma, muddle, mess, imbroglio, mare's nest, dire straits; informal pickle, stew, fix, hole, scrape, bind, (tight) spot, (tight) corner, hot/deep water; Brit. informal spot of bother.