PCS

*laḥm- - bread, food (Fronzaroli 1971: 615–616, 632, 640; Kogan 2011: 238; Kogan 2015: 219)

Gez. lāhm ‘ox, bulľ and Soq lʼéḥim ‘big fish, shark’ are definitely unrelated to this root The meaning shift from “bread” to “meat” represents a comparatively late innovation in Arabic (Fronazroli 1972:615).

Ugaritic
lḥm - grain; bread; food (DUL 497)
Hebrew
läḥäm - bread (HALOT 526)
Syriac
laḥmā - bread (LSyr. 364, SL 685)
Arabic
laḥm- - meat (Lane 3008)