甲

back of the hand

armoring; armouring; armor; armour

good-for-nothing; spineless; gutless; spiritless; feckless; pluckless; cowardly; tame; timid; pathetic; pitiful; disappointing; shameful; useless; worthless

Anatomy

nail plate; nail bed

value in doing something; feeling that something is worth doing; rewarding feeling; sense of satisfaction

reason for living; something one lives for; purpose in life; raison d'être; ikigai

reliability; trustworthiness; dependability

covering for the back of the hand and wrist

value in doing something; feeling that something is worth doing; rewarding feeling; sense of satisfaction

armoured vehicle; armored vehicle

unbecoming; unsuitable; disgraceful; wrong for one's age; unworthy of one's years; thoughtless for one's age

armour (e.g. tank); armor

Anatomy

shoulder blade; scapula

top of the foot; instep; dorsum of the foot; dorsum pedis

armor piercing ammunition; armour piercing ammunition

to accept one's inferiority; to take one's hat off to someone

to give up; to surrender; to strike one's colors

upper deck

sternum; breastplate; plastron

tortoiseshell (of the hawksbill turtle); bekko

In Chinese medicine

tortoiseshell (esp. of the Chinese soft-shelled turtle)

crust-like shell

true friendship

iron armor (armour); iron helmet

position on the fingerboard (of a shamisen, koto, etc.)

vital point; crux

tortoise shell bondage; turtle shell bondage