PS

*γull- - collar, yoke (Kogan 2001: 281-282)

Akkadian
ḫalālu - to detain, keep waiting (CAD Ḫ 34, AHw. 309)

Cf. discussion in Kogan 2001:281-282.

Akkadian
ullu - collar; ring (an ornament) (CAD Ḫ 229, CAD U–W 81; AHw. 354, 1410)

Also attested as ḫullu. Due to Arb. and other Sem. cognates, can neither be separated into two lexemes, i.e. ḫullu and ullu, nor treated as a Sumerian loanword (Kogan 2001:281). 

Ebla
ḫu-lu - yoke (Kogan–Krebernik 2021b: 723; Pasquali 1995: 52)
Amarna Canaanite
ḫullu - yoke (CAD Ḫ 230, EA 257:15, 296:38 )

Written as ḫu-ul-lu as a gloss to Akk. nīru in EA 296:38 and as ḫu-li in EA 257:15.

Hebrew
ˁōl - yoke (BDB 760; HALOT 827-828)
Arabic
γll - to put a ring or a collar of iron upon the neck or manacle on the hand (Lane 2277; Dozy 1927 II: 219)
Arabic
γull- - a ring or collar of iron, which is put upon the neck (Lane 2278)