δ1115Δίκτυον
net
And [there is] a proverb: "you are hunting the wind with a net," in reference to those doing something in vain and mindlessly. Also, "you are inflating a net," in reference to the equally mindless.
Δίκτυον. καὶ παροιμία· Δικτύῳ ἄνεμον θηρᾷς, ἐπὶ τῶν μάτην καὶ ἀνοήτως τι ποιούντων. καί, Δίκτυον φυσᾷς, ἐπὶ τῶν ὁμοίως ἀνοήτων.