[1] The headword is either neuter nominative/accusative plural or feminine nominative singular of the adjective ple/ws; the glossing (for which cf. generally pi 1730) is ambiguous on that point. First gloss only in the Synagoge and Photius (pi924 Theodoridis); second gloss only in (e.g.) the scholia to (?)Aeschylus, Prometheus Bound 696. Synchronically speaking, ple/ws "full" and polu/s "more" are different words, although their forms can overlap (see pi 1718) and they come ultimately from the same Indo-European root.
[2] Aristophanes, Lysistrata 201, with a scholion on 200.