Ki˚ 2nd. stem of interr. pron. (cp. ka˚ ku˚); 1. in oblique cases of ko (kaḥ), as gen. kissa. loc. kismiŋ & kiŋhi. <-> 2. in nt. kiŋ what? (cp. Gr. ti/, Lat. quid; ending -- m besides -- d in kad, as Lat. quom, tum besides quod, id). -- 3. in primary derivations, as kittaka, kīva (=Sk. kiyant) which stands in same relation to *qṷi as Lat. quantus to *qṷo; and in secondary derivations from kiŋ, as kiñci, kiñcakkha, kīdisa, etc.

Pali-English Dictionary, TW Rhys Davids, William Stede,