○kāṣṭha n. a small piece of the wood (of particular trees) used for cleaning the teeth MBh. xiii &c
• cleaning the teeth with the danta-kāṣṭha, 4996 VarP.
• m. N. of various trees the wood of which is used for cleaning the teeth (Flacourtia sapida L.
• Asclepias gigantea, Ficus indica, Acacia Catech, Pongamia glabra, Terminalia alata) Npr.
• ○ṣṭhâbhakṣaṇa n. 'omitting to use the d○', N. of VarP. cxxxi

Sanskrit-English Dictionary, by M. Monier William