bar - an obstruction (usually metal) placed at the top of a goal; "it was an excellent kick but the ball hit the bar"

barrier - a structure or object that impedes free movement

blockade - prevents access or progress

blockage, stoppage, occlusion, closure, block, stop - an obstruction in a pipe or tube; "we had to call a plumber to clear out the blockage in the drainpipe"

hindrance, preventative, preventive, encumbrance, incumbrance, interference, hitch - any obstruction that impedes or is burdensome

obstacle - an obstruction that stands in the way (and must be removed or surmounted or circumvented)

structure, construction - a thing constructed; a complex construction or entity; "the structure consisted of a series of arches"; "she wore her hair in an amazing construction of whirls and ribbons"

tumbler - a movable obstruction in a lock that must be adjusted to a given position (as by a key) before the bolt can be thrown

physiological condition, physiological state - the state of the body or bodily functions

ileus, intestinal obstruction - blockage of the intestine (especially the ileum) that prevents the contents of the intestine from passing to the lower bowel

tamponade, tamponage - blockage or closure (as of a wound or body cavity) by (or as if by) a tampon (especially to stop bleeding)

deterrent, hindrance, impediment, balk, baulk, handicap, check - something immaterial that interferes with or delays action or progress

roadblock, barrier - any condition that makes it difficult to make progress or to achieve an objective; "intolerance is a barrier to understanding"

rub, hang-up, hitch, snag - an unforeseen obstacle

hurdle - an obstacle that you are expected to overcome; "the last hurdle before graduation"

stymie - a thwarting and distressing situation

interference, hindrance - the act of hindering or obstructing or impeding

blockage, occlusion, closure - the act of blocking

stalling, stall - a tactic used to mislead or delay

obstruction of justice - impeding those who seek justice in a court (as by trying to influence or intimidate any juror or witness or officer of the court); can result in a finding of contempt of court

maneuver, manoeuvre, play - a deliberate coordinated movement requiring dexterity and skill; "he made a great maneuver"; "the runner was out on a play by the shortstop"

blocking, interference, block - (American football) the act of obstructing someone's path with your body; "he threw a rolling block into the line backer"

check - obstructing an opponent in ice hockey