mahikā : [f.] the frost.

A.P. Buddhadatta Mahathera, Concise Pali-English and English-Pali Dictionary [available as digital version from Metta Net, Sri Lanka]

Mahikā (f.) [cp. *Sk. mahikā] fog, frost, cold (=himaŋ DhsA 317) Vin ii.295=Miln 273; Sn 669; Miln 299; VvA 134 (fog). -- As mahiyā at A ii.53.

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