ῥυππαπαῖ

A. yoho! Ar. Ra. 1073: hence comically, τὸ ῥ. the crew, one's messmates, Id. V. 909; also ῥυπαπαῖ AB 446.—Cf. ἱππαπαῖ.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project