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small build; small stature; petite
small pattern
「小柄」 has other readings with different meanings.
小柄な体型を活かしてダンサーになった。
She became a dancer, making use of her petite figure.
小柄な体格ながら彼は驚くほど力が強い。
Despite his small build, he is surprisingly strong.
小柄な選手が俊敏な動きで得点を決めた。
The petite player scored with agile movements.