लास्य (lāsya) n. dancing, a dance (esp. accompanied with instrumental music and singing), a dance representing the emotions of love dramatically (this was at one time a principal part of the drama, and as such accord. to Bharata and the Daśa-rūpa consisted of 10 divisions or Aṅgas, viz. गेय-पद (geya-pada), स्थित-पाठ्य (sthita-pāṭhya), आसीन (āsīna), पुष्प-गण्डिका (puṣpa-gaṇḍikā), प्रच्छेदक (pracchedaka), त्रि-गूढ (tri-gūḍha) or त्रि-मूढक (tri-mūḍhaka), सैन्धव (saindhava), द्विगूढक (dvigūḍhaka) or विमूढक (vimūḍhaka), उत्तमोत्तमक (uttamottamaka), and उक्त-प्रत्युक्त (ukta-pratyukta); including also a style of dramatic composition in which there is abrupt transition from Sanskṛt to Prākṛt and from Prākṛt to Sanskṛt; the term लास्य (lāsya) is also applied to the Nāch [Nautch] dance of the Indian dancing girls, consisting chiefly of gesticulation with a shuffling movement of the feet forwards and backwards, as invented by Pārvati and opposed to the boisterous masculine dance called Tāṇḍava practised by Śiva and his followers; cf. Indian Wisdom, by Sir M. Monier-Williams (Title) 467 ), Mahābhārata (Title) ; Kāvya literature (Literary category) &c. [ID=182034]
— Monier-Williams Sanskrit-English Dictionary (1899)