Proto-Sino-Tibetan: *r[ā]kʷ
Meaning: noise, roar
Tibetan: ãkhrog-pa to roar, rush, buzz; grag-pa noise, rumour; ãgrag(s)-pa to cry, sound, resound; sgrog-pa to call, call out.
Burmese: rǝuk to sound, buzz.
Kachin: (H) gǝro to din, clamour.
Lushai: rāk to make a noise.
Lepcha: grik noise, sound of anything
