一個・１個・一箇|いっこikko[1]atamadaka (head-high)

1. nounone (thing); one piece; one item
   そのオレンジは１個こ７ペンスでした。↗

   The oranges cost 7 pence each.

• Related一つひとつNeutralNeutral synonym of 一個; as the basic native numeral, 一つ also covers abstract and figurative uses, making it the safe choice whenever no specific counter clearly applies.

Choose 一個 to count one discrete piece or item, especially small concrete objects; use the neutral 一つ as the all-purpose default, including abstract and non-counting senses.

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

1. 物ものが一ひとつであること。
2. 人ひとがひとりであること。
3. 水田すいでんなどの流水りゅうすい量りょうの単位たんい。毎秒まいびょう一いち立方りっぽう尺しゃく。