to roar, to thunder, usually of clouds. Of the earth: Dāvs v.29; of a man (using harsh speech) Ja.i.226; Ja.ii.412 (mā gajji); Mnd.172 (= abhi˚); Ja.iv.25
caus gajjayati, ger. gajjayitvā (megho g˚ thanayitvā (megho g˚ thanayitvā pavassati Iti.66.

Sk. garjati, cp. gargara & jarā roaring, cp. uggajjati Dhtp.76: gajja sadde