I think that this word better represents the idea of a lexeme (based on
its veljvo, not necessarily its currently and here proposed definition)-
specifically, of a vocal/verbal/sound/spoken word/concept; for a generic
lexeme, I would propose simply vlasle. For "phoneme", I would propose
banvoksle (which implies that the sound is, moreover, a voice and that
the unit is language-specific (unlike a phone or any old sound) and
linguistic in nature).