makasa : [m.] a mosquito.

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

Makasa [fr. Vedic maśaka viâ *masaka>makasa: see Geiger, P.Gr. § 472] mosquito Vin ii.119; S i.52 (a˚ free from m.); A ii.117; Sn 20; J i.246; Sdhp 50. See also cpd. ḍaŋsa˚.
   -- kuṭikā mosquito net or curtain Vin ii.119, 130. -- vījanī mosquito fan Vin ii.130.

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