ပိန်သည်
痩せる(やせる)、痩身(そうしん)
to lose weight, slim body
On-reading (ソウ) is used in compounds; kun-reading (や(せる)) is used standalone or with okurigana. Has multiple meanings (thin; lean; lose weight). Context determines which applies — pay attention in reading passages. This kanji forms verbs/adjectives with okurigana. Practice both the word form and compound forms.