腕一本脛一本

うでいっぽんすねいっぽん

relying on one's own resources; being entirely on one's own

一本指

いっぽんゆび

finger, one's finger

一本松

いっぽんまつ

solitary pine tree

一本杉

いっぽんすぎ

solitary Japanese cedar

一本道

いっぽんみち

direct unforked road, straight path

一本橋

いっぽんばし

log bridge

一本化

いっぽんか

unification, centralization, integration, drawing things together, working out a common policy

生一本

きいっぽん

straight-forwardness, honesty, purity

一本気

いっぽんぎ

single-minded (esp. personality or person), one-track mind

一本糞

いっぽんぐそ

long stool (that one is able to press out entirely in one go without it getting cut off); (long) sausage-shaped poop

一本眉

いっぽんまゆ

unibrow, monobrow

一本箸

いっぽんばし

single chopstick stuck upright into the bowl of rice offered to the deceased at their funeral

一本歯

いっぽんば

tall geta with a single tooth

一本グソ

いっぽんグソ いっぽんぐそ

long, rope-like excrement

一本占地

いっぽんしめじ イッポンシメジ

livid pinkgill (species of poisonous mushroom, Entoloma sinuatum)

一本釣り

いっぽんづり いっぽんずり

fishing with a pole

一本やり

いっぽんやり

guiding principle, single-minded policy

一本立て

いっぽんだて

single standard, single base

一本調子

いっぽんぢょうし いっぽんちょうし

monotone