隠

enlightened hermit

Martial arts

Ninja art of escape

hidden path

padding, armour, etc. covering the testicles

mantle or hood on a urinal, squat-toilet, etc.

concealment

black longspine urchin (Diadema setosum)

hat of invisibility; hat that makes its wearer invisible

Encheliophis sagamianus (species of pearlfish)

hider; person in hiding

seclusion

cryptic coloration (colouration); camouflage

hiding one's mistakes (or wrongdoings, etc.)

back pocket

white kidney bean

hidden line (in a technical drawing)

Asparagus schoberioides

standing panel used in Kansai-area rakugo to hide the performer's legs from view; knee-hider

concealed nail

hidden line

suppressor

hidden surface

hiding in the nest

pea crab (any crab of the family Pinnotheridae)

rove beetle

fascia board; facia board