平手|ひらてhirate[0]heiban (flat)

1. nounpalm; open hand
   昔むかしは、悪わるいことをすると、学校がっこうの先生せんせいから平手ひらてをくらったり拳固げんこをもらうことが当たり前あたりまえだった。↗

   In the past it was perfectly normal to get the back of a teacher's hand or fist as punishment.
2. noun, shogiplaying on equal terms; lack of handicap

• Synonym手のひらてのひらNeutralThe everyday, most common word for the palm. 「平手」 is an open hand, seen mainly in 「平手で打つ」, and also means a game with no handicap.
• Related手の腹てのはらNeutralThe palm as the inside of a closed hand; rare, with 「手のひら」 the usual everyday word. It lacks 「平手」's open-hand slapping sense.
• Related手掌しゅしょうWrittenA written, medical term for the palm, rarely used. It has neither 「平手」's slapping sense nor its no-handicap shogi sense.

For the palm in daily speech use 「手のひら」. 「平手」 is an open hand, as in 「平手で打つ」 and 「平手打ち」, and also a shogi game with no handicap. 「手の腹」 is a rare word for the palm's inside; 「手掌」 is written/medical. Neither covers 「平手」's slapping or shogi senses.

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

1. 五ご本ぽんの指ゆびを開ひらいた手て。
2. 両者りょうしゃとも駒こまを落おとさずに行おこなう対局たいきょく。