παρασύνθημα
From LSJ
ἑτέρως ἠδύνατο βέλτιον ἢ ὡς νῦν ἔχει κατεσκευάσθαι → otherwise they could have been constructed better than they are now (Galen, On the use of parts of the body 4.143.1 Kühn)
English (LSJ)
ατος, τό,
A sign which accompanies the password, Aen.Tact.25.1, Plb.9.13.9, Onos.26.
German (Pape)
[Seite 501] τό, Nebensignal, Gegensignal, Parole, Pol. 9, 13, 9, Onosand. 26.