asani : [f.] thunderbolt.

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

Asani (f.) [Vedic aśani in same meaning; with Sk. aśri corner, caturaśra four cornered (see assa), to Lat. ācer pointed, sharp, Gr. a)/kros pointed, Ags. egl sting, Ohg. ekka corner, point. Connected with this is Sk. aśan (see asana1). Cp. also aŋsa & asama2] orig. a sharp stone as hurling -- weapon thence in mythol. Indra's thunderbolt, thunder -- clap, lightning J i.71, 167; ii.154; iii.323; Miln 277; VvA 83.
   -- aggi the fire of thunder, i. e. lightning or fire caused by lightning DhA iii.71. -- pāta the falling of the thunderbolt, thunderclap, lightning DA i.280 (or should we read asannipāta?); PvA 45. -- vicakka same as ˚pāta (?) S ii. 229 (= lābha -- sakkāra -- silokassa adhivacana); D iii.44, 47.

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

asani: f. 雷電

巴漢辭典 編者：(斗六) 廖文燦

asani and asanika mfn. ? (g. ṛśyâdi, q.v.)

Sanskrit-English Dictionary, by M. Monier William