aegis
arm guard
backstop
buffer
bulwark
bumper
contraceptive
copyright
crash helmet
cushion
dashboard
dodger
face mask
fender
finger guard
foot guard
fuse
goggles
governor
guard
hand guard
handrail
hard hat
helmet
insulation
interlock
knee guard
knuckle guard
laminated glass
life preserver
lifeline
lightning conductor
lightning rod
mask
mudguard
nose guard
pad
padding
palladium
patent
pilot
preventive
prophylactic
protective clothing
protective umbrella
safeguard
safety
safety glass
safety plug
safety rail
rail
railing
16-inch
18-inch
25-pair
CATV
andwhether
cablestrung
campstool
cupridium
disklike
lab-quality
luminaire
optical fiber
pika-pina
polygonal
regulus
right angle
specular
straight-through
toglass