Monier-Williams: A Sanskrit-English Dictionary (p. 268)
kāñcanāra, m. mountain ebony (Bauhinia variegata) Bhpr. Bālar.

Monier-Williams: A Sanskrit-English Dictionary (p. 314)
m. easily to be split, or to be split with difficulty (? cf. kuddala, kuddāla), Bauhinia variegata, Gobh.; MBh.; R.; Suśr.; Ritus.; one of the trees of paradise, Hariv. 7169; Lalit.

Dymock, Warden, Hooper: Pharmacographia Indica
Bauhinia variegata, Leguminosae (vol. I, p. 536)
There are two varieties of this Bauhinia. The flowers of the one are purple, or deep rose-coloured, and of the other white, yellow and green; both are noticed in the Bhavaprakāsa under the names of Kovidara and Kanchanāra, and are said to have similar properties, the bark being described as alterative, tonic, astringent and useful in scrofula, skin diseases, and ulcers. Chakradatta recommends the bark of the first variety in scrofulous enlargements of the cervical glands, and directs it to be given in emulsion with rice-water and ginger. Sārangadhara also recommends it for a similar purpose, and prescribes it in combination with guggulu (gum-resin of Boswelia serrata), myrobalans, and a number of aromatics. In the Concan the juice of the fresh bark with the juice of the flowers of Strobilanthes citrata, 10 tolās of each, is given as an expectorant, and the bark is used with ginger as an internal remedy for scrofula. Under the name Kachnār, the author of the Makhzan describes the bark as astringent, attenuant and tonic. He says it is used to check diarrhoea, to remove intestinal worms, and prevent the decomposition of the blood and humuors; on this account it is useful in leprosy and scofula. A gargle made from the bark with the addition of Akākiā (extract of Acacia pods) and Pomegranate flowers is mentioned as a remedy in salivation and sore throat, and a decoction of the buds in cough, bleeding piles, haematuria and menorrhagia.