Dictionary Definition:
ava√sphūrj (p. -sphū́jat) Vedṭo thunder, make a noise like a thunder-clap VS. TS. ŚBr. &c
• to snort MBh. vi, 774 (ed. Bomb.) Suśr
• to fill with noise MBh. vii, 321 Hariv. 13279