一時

also １時

1. noun one o'clock
2. adverb, noun once; at one time; formerly; before
3. adverb, noun, takes の, in weather forecasts, indicates that a given condition will hold for less than one quarter of the forecast period for a time; for a while; for the time being; for the moment; temporarily
4. prefix a time; one time; once

ひととき · いっとき also ひと時

1. noun, usually in kana a (short) time; a while; moment
2. noun, adverb, usually in kana one time (in the past); a period; former times
3. noun, archaic two-hour period