Geez

ˀaryām - heights, the high, the highest (CDG 41)

This is the most reliable reflex of *rym in Geez. The exact philological background of rayama ‘to be high, to be long,’ rəyyum ‘raised, elevated’ and rayyām ‘high, elevated’ remains to be established insofar as none of them is listed in LLA

PWS
*rwm/rym - to be high, tall, long (Kogan 2015:97)