Probably neuter of a presumed derivative of probaino; something that walks forward (a quadruped), i.e. (specially), a sheep (literally or figuratively) -- sheep(-fold).
see GREEK probaino
πρόβατα (probata) − 26 Occurrences
πρόβατον (probaton) − 3 Occurrences
προβάτου (probatou) − 1 Occurrence
προβάτων (probatōn) − 9 Occurrences