尻

tail (of an animal)

buttocks

mouth of a river

to look happy

outer canthus

looking at from the corner of one's eye

to look askance (at)

protruding buttocks

commissures (of the lips)

word ending

small buttocks (esp. of a woman)

writing characters in the air with one's behind (by moving one's hips)

falling intonation

butt of a gun

rising intonation

to take responsibility for

mythical ball inside the anus that is sought after by kappa

long stay

being a guest for too long (e.g. of a neighbor)

long stay

lining of pants seat

shiritori

to bring a complaint to a person (who is responsible for the problem)

to show one's true colors (colours)

slowcoach

lazy

lazy ass

leaving unfinished

object cut off at the end

promiscuous woman

wanton girl

bare buttocks

put your household shrine in a high position in the front of the house and your Buddhist altar in the back

to be pressed (by urgent business)

to follow suit

evading blame by pinning it on a subordinate and abandoning them

beautiful buttocks

bottom shuffling

crouching

shirizumo

hesitation

buttocks of a horse being ridden or followed

balance of an account

large buttocks (esp. of a woman)

to wag one's tail

pushing from behind

forgetfulness

to balance the accounts

to balance (accounts)

to pounce on someone's words

lowest ranked wrestler in makuuchi division

to tuck one's tail between one's legs

loose

fast

rump

Laminaria ochotensis (species of kelp)

to get ripped off for every last penny

to take someone by surprise

balance of exchange

buttock hair

to have something on someone

tucking up the hem of one's garments

tucking up the hem of one's garments

anus

end of a rope

rolling one's kimono up to one's waist

tiny buttocks

bottom

tail end

attenuating

weak ending

to suddenly assume an antagonistic attitude

spanking (a child)

to encourage to do (something)

to stand up

spanking the bottom

tail end

tucking up the hem of one's garments

backside

feeling restless

large ass

spanking with a baseball bat

deadline (esp. in the entertainment industry)

last (on the list)

buttock

anxious

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

to dominate (usu. one's husband)

burying one's head in the sand (while leaving other parts of one's body exposed)

blossom-end rot

to sit down

the pot calling the kettle black

closing part of a balance sheet

traditional Koshōgatsu ceremony where the newly-wed wife is hit with a sacred wooden pole on the rump to ensure her fertility

someone who is bad at horse-riding

to beat a hasty retreat

to beat a hasty retreat

tip of a scabbard

bottom of a pan or pot

end of an eyebrow

spanking

cone-shaped

incontinence

Japanese spineless cuttlefish (Sepiella japonica)

falling on one's backside

to fall on one's backside

rear part of saddle

cleaning up someone else's mess

baby wipes

decorative portable shrine

black-headed monitor (Varanus tristis)

there is no use shutting the stable door after the horse has bolted