κροῦσις

English (LSJ)

εως, ἡ,

   A striking, smiting, collision, αἱ πρὸς ἀλλήλας κ., of atoms, Epicur.Nat.Herc.1431.16; ἡ πρὸς ἄλληλα κ. τῶν ὅπλων Plu. Aem.32; ποδὸς κρούσει χρώμενος spurring with the heel, of a rider, Id.Alex.6.    2 tapping or ringing of earthen vessels, to see whether they are sound: hence, generally, scrutiny, Suid.    3 metaph., of sophistical attempts to deceive, chicanery, Ar.Nu.318.    4 playing on a stringed instrument, Plu.Per.15, 2.1137b, etc.: generally, instrumental music, Plb.30.22.5; κρούσεις καὶ μέλη Phld.Mus. p.13 K.; παρὰ τὴν κροῦσιν λέγειν, of the recitative, ᾄδειν, of the air sung to the accompaniment of instrumental music, Plu.2.1141a; κ. ἡ ὑπὸ τὴν ᾠδήν heterophone accompaniment, ib.b.