leum

a jump, Irish, Old Irish léim, léimm, Welsh llam, Breton lam, Old Breton lammam, salio: *lengmen-, Old Irish vb. lingim, I spring, root leg, leng; Sanskrit langhati, leap, spring; Middle High German lingen, go forward, English light, etc. The Old Irish perfect tense leblaing has made some give the root as vleng, vleg, Sanskrit valg, spring, Latin valgus, awry, English walk; and some give the root as svleng, from svelg. It is difficult to See how the v or sv before l was lost before l in leum.