Natyashastra
मधुराकुञ्चितान्ता च सभ्रूक्षेपा च सस्मिता । सममन्यविकारा च दृष्टिः सा ललिता स्मृता ॥ ७६॥
Lalitā: The Glance which is sweet, and contracted at the end ॥ of the eye॥ and which is smiling and has movement of the eyebrows, and shows signs of love is called Lalitā (amorous).
english translation
madhurAkuJcitAntA ca sabhrUkSepA ca sasmitA । samamanyavikArA ca dRSTiH sA lalitA smRtA ॥ 76॥
hk transliteration by Sanscript