[Meaning they] having been tripped up, having fallen together.
"They drink the wine to excess and without experience [of doing so] and, confused, they would lie down wherever each group of them happened to fall."1
Also [sc. attested is] a)natre/pw ["I confuse"]; [used] with an accusative.2
The headword is aorist passive participle of a)natre/pw, masculine nominative plural. It is perhaps (though not demonstrably) extracted from the quotation given.