Mehri

ǝḥtǝlūm - to have a nocturnal ejaculation when dreaming (ML 179)

PWS
*ḥlm - to dream; have nocturnal ejaculations when dreaming (SED I No. 25ᵥ; HALOT 320)
There is no trace of *ḥlm ‘to dream’ in Akkadian, where the nominal concept “dream” is expressed by šuttu, a secondary formation from PS *šin-at- ‘sleep (Kogan 2015: 83)