The Lehabim are mentioned among the descendants of Mizraim, son of Ham, son of Noah (Genesis 10:13).
The name Lehabim comes from the unused root (lhb). Its identical derivative (lahab) means flame (Judges 13:20) or blade (Judges 3:22).
Derivative (lehaba) also means flame or tip of a weapon (1 Samuel 17:7). Derivative (shalhebet) means flame as well (Song of Solomon 8:6).
For a meaning of the name Lehabim, NOBS Study Bible Name List reads Flaming. Jones' Dictionary of Old Testament Proper Names has Flames, or more interpretative, Scorching Heat.
(lhb). Its identical derivative 
(lehaba) also means flame or tip of a weapon (1 Samuel 17:7). Derivative 
(shalhebet) means flame as well (Song of Solomon 8:6).
