noun
one hole; single hole
Literal meaning: a single opening or perforation. Used in technical or descriptive contexts.
この部品には一穴だけ開いている。
This part has only one hole drilled in it.
noun
combined toilet bowl; toilet for both urination and defecation
Refers to a toilet bowl designed for both urination and defecation, as opposed to separate fixtures. Often used in contexts like portable toilets or traditional Japanese toilets.
簡易トイレは一穴式が多い。
Many portable toilets are of the combined type.
noun
effective moxibustion point; single acupoint for moxibustion
In traditional medicine, a specific point on the body where moxibustion is applied effectively. Technical term.
灸治療では、一穴に集中して据えることもある。
In moxibustion therapy, sometimes the treatment is focused on a single effective point.
noun
one-woman man; man devoted to one woman
Colloquial, somewhat dated expression for a man who is faithful to one woman or only interested in one woman at a time.
彼は一穴主義らしいよ。
He seems to be a one-woman kind of guy.