Sperre
ban
barricade
barrier coating
barrier membrane
barrier
blackout
block
blockade
blocking device
catch
check
choke
click
closure
conditional blocking device
dam
detent
diff lock
differential lock
embargo
flash
gate of bin
gate
harrier
interlock
latch
latching
lock out
lock-out device
lock-out
lock
locking device
mental block
obstacle
power lock
ratchet
rejection circuit
restriction
road-block
roadblock
seal to close tightly
seal
sealing layer
shutoff
stop
stopper
suppressor
trap antiresonance circuit
trap circuit
trap
wave trap