Reconstructions

PWS
*lVbn- - incense tree (EDA I 241)
PWS
*ligām-/lugām- - bridle (EDA P 25)
PWS
*lḥm - to fight (Kogan 2015: 427)
PWS
*lwṭ - to twist, to turn, to do a second time (Kogan 2015: 464)
Probably unconnected are Akk. lâṭu ‘to confine, to keep in check’, līṭu ‘hostage, pledge’ as well as Arb. lwṭ ‘to cleave, to stick, to adhere’
PWS
*lγd - to make camels to keep to the road pr to the right way (Kogan 2005 c:208)
PWS
*maˁmaˁ- - brain (SED I No. 184; Kogan 2005d; Kogan 2011: 220)

Not quite reliable. Scarce attestation only in Ugr., Arb. (phonetically questionable) and MSA. Cf. *muḫḫ- - brain, marrow No. 187. 

PWS
*mVdVr-/*mVdr- - earth, soil (Fronzaroli 1969: 5, 24; Kogan 2011: 189; Kogan 2015: 445)
in EthS completely ousted PS *ˀarŝ-̣ ‘earth,’ which left virtually no trace
PWS
*mugl- - pus (SED I No. 186; Kogan 2011: 214)
PWS
*mhr - to be skilful, experienced (Kogan 2015: 90)
PWS
*mVhr- - dowry (Kogan 2015: 125)