alarm

bar

batten

bulky

corridor

crash

cross

crossbar

danger

device

door

emergency

escape

evacuate

evacuation

exit

fire

gate

hallway

hatch

health

heavy

hospital

latch

lever

lock

lockdown

locking

mechanism

metal

metallic

open

opener

opening

outward

panic

push

rescue

resistant

rod

rush

safety

security

shut

slam

spring-loaded

stairway

stampede

unlatch

unlock

spring load