The short answer is no. Lecher is from a Germanic root, through French lechier, ‘to lick’. The PIE root is leigh. Spanish leche is from the Latin lact-, ‘milk’. The PIE root is melg-.
Faldy, you’d better reread your link. Melg- is the PIE root of “milk” but not of Latin lact- (nor Greek galact-, which as you might guess is related to the Latin).
That doesn’t alter your correct answer to the original question, though.
Faldy, you’d better reread your link. Melg- is the PIE root of “milk” but not of Latin lact- (nor Greek galact-, which as you might guess is related to the Latin).
That doesn’t alter your correct answer to the original question, though.
Yeah, you’re right. The PIE root is g(a)lag- or g(a)lakt-, which doesn’t have its own entry.