διώκει παῖς ποτανὸν ὄρνιν → a boy chases a bird on the wing, vain pursuit
subs.
Ar. and P. πυκνότης, ἡ.
Dulness: P. νώθεια, ἡ (Plat.), ἀναισθησία, ἡ, P. and V. ἀμαθία, ἡ.