δεσμοῦ [1 verse] (noun sg masc gen) "Bond" is desmos, which means "band", "bond", "anything for tying and fastening",  "connection", "imprisonment", "spell" and "charm". -- "Bind" is an adjective form for a verb that means "to bind", "to keep in bonds", "to tie", "to hinder from," and "to fetter. " It is a past participle in a form that indicates something acting on itself so "has been tied itself." The sense is not that the ass was tied up by someone, but rather that it has tangled itself up in something.