τὸ πλῆθος οὐκ εὐαρίθμητον ἦν → the crowd wasn't easy to count, the crowd was not small, it was not a small crowd
-ίδος, ή, Α(ποιητ. τ.) η ρίζα.[ΕΤΥΜΟΛ. < ῥίζα + επίθημα -ίς, -ίδος (πρβλ. θαμνίς)].