胃|いi[0]heiban (flat)

1. nounstomach
   食物しょくもつは胃いの中なかで消化しょうかされる。↗

   Food is digested in the stomach.
2. noun, astronomyChinese "stomach" constellation (one of the 28 mansions)

• Synonym胃袋いぶくろCasualColloquial word for the stomach; also figuratively for appetite or dietary needs, as in 「胃袋をつかむ」.
• SynonymストマックNeutralLoanword for the stomach, but rarely used in everyday speech; seen mostly in product names.
• Related胃の腑いのふWrittenOld-fashioned written term for the stomach, with a literary, dated flavor.

Use 「胃」 for the organ in almost any context. 「胃袋」 is the colloquial choice and can also refer to appetite, as in 「胃袋をつかむ」. 「ストマック」 and 「胃の腑」 are rare: the former mostly in product names, the latter old-fashioned.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 内臓ないぞうの一ひとつ。食道しょくどうに続つづき、食物しょくもつを一時いちじ貯たくわえて、消化しょうかを行おこない、腸ちょうへと送り出おくりだす器官きかん。ストマック。