τέρθριος,ὁ,
A. rope from the end of a sail-yard(τέρθρον), used for reefing, Ar. Eq. 440 , cf. Sch. ad loc.; τ. κάλοι
Erot.
, Gal. 19.145 .
II.
τερθρία πνοή, cited from S. ( Fr. 333 ) in EM 753.7 , is there expld. byὀπισθία, asternwind, but perh. rather astiffgale requiring the use ofτέρθριοι.