arrest
arrestation
arrestment
bar
barrier
blank wall
blind alley
blind gut
block
blockade
blockage
blocking
bottleneck
burden
burthen
cargo
cecum
charge
check
choking
choking off
clog
clogging
closing up
closure
congestion
constipation
constriction
costiveness
cramp
cross
cul-de-sac
cumbrance
curb
dead end
deadweight
delay
detainment
detention
difficulty
disadvantage
embarrassment
embolism
embolus
encumbrance
fixation
foot-dragging
freight
gorge
annoyance
complication
constraint
defect
disability
discouragement
distraction
flaw
hardship
hindrance
inconvenience
interruption
limitation
misunderstanding
objection
obstacle
obstruction
restraint
setback
temptation
sediment