PC

*hm - to be noisy (DRS 419)

biconsonantal element

Hebrew
hāmōn - turmoil, noise, roar; multitude, crowd (HALOT 250)
Old Aramaic
hml - noise (KAI 222A: 29)
unreliable and eventually rejected in DNWSI 287 (contrast Fitzmyer 1995:87)