παρακαθίημι

A. let down beside, of the nautilus, ἀντὶ πηδαλίων τῶν πλεκτανῶν παρακαθίησι lets down some of its feelers . . , Arist. HA 622b14; let drop or sink by the side, τὰς χεῖρας Plu. Nic. 9; δακτύλιον Id. 2.63e: abs., send out side-roots, Thphr. HP 8.2.3:—Med., πηδάλια ζεύγλαισι παρακαθίετο E. Hel. 1536.
2. intr. (sc. ἑαυτόν), sink down, π. τοῖς σώμασι διὰ τὸν κόπον Plb. 35.1.4.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project