κεχηνός

From LSJ

Sunt verba voces quibus hunc lenire dolorem possis, magnam morbi deponere partem → Words will avail the wretched mind to ease and much abate the dismal black disease.

Horace, Epistles 1.34

Russian (Dvoretsky)

κεχηνός: τό
1 зияющее отверстие, дыра (τοῦ πίθου Luc.);
2 рит. зияние, разрыв (τοῦ ῥυθμοῦ Luc.).