Comment: The Ag. form is from the Burshag dialect. Cf. also Tab. Düb. jaq:-li, Ag. Fit. jaq:al-t 'high'. In Lezg. there occurred a contamination with *[hI]alχä- 'long' q.v. (that is why we have jarʁi instead of *jarq:i; cf. also Lezg. Khl. t:aq:aj 'high', which contains a preverb t:-).
The root is actually verbal, which is shown by verbal prefixation (q:-) in Kryz.; it is also very probable that the Tab. verb di-ji=ʁ-uz (Düb. dī=q:-)'to stand' reflects the same root.