Meaning of (बटन खोलना) batan kholana in english
As verb :
unbutton Ex:  unbutton mean figuratively, in colloquial language, speak freely say whatever they think
Suggested : to free (buttons) from buttonholes unfasten or undo
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(बटन खोलना) batan kholana
can be used as verb.. No of characters: 9 including consonants matras.
Transliteration :
baTana kholanaa