noun / ~する noun:

• absurdity; irrationality

noun:

• slicing a fish down its back
• slit in the back of a garment
• split in a piece of lumber (to prevent splitting when drying)

noun:

• carapace

noun:

• back pressure

noun:

• back - obscure term

noun:

• backache; back pain

noun:

• backwater ➜ バックウォーター
• standing with one's back to water (river, lake, etc.) - archaism

noun / ~の noun:

• back

noun / ~する noun:

• inconsistency; contradiction; disobedience

noun:

• backboard
• dorsal plate; tergum ［はいばん］

~の noun:

• dorsal

noun / ~の noun:

• apostasy; renunciation (e.g. of a religion); defection

noun:

• dorsal fin

noun:

• backstroke

noun:

• breadth of the back

noun:

• knapsack

noun:

• meat, flesh, or muscles along the spine - archaism

noun:

• back fat; fatty upper part of roast pork - Food term