The headword is aorist passive subjunctive, third person singular, of the verb ἐκβράζω or ἐκβράττω . It is identically glossed (apart from the last phrase here) in the Collectio verborum utilium e differentibus rhetoribus et sapientibus multis (edited by Bachmann: below). It is evidently quoted from somewhere; perhaps Aelian, de natura animalium 16.19, where it refers to the so-called sea hare (a kind of sea slug).
For the use of the verb in regard to ships, see Herodotus 7.188 (web address 1).
[1] Aorist passive subjunctive, third person singular, of the verb ἐβάλλω .
[2] Second aorist passive subjunctive, third person singular, of the verb ἐκρίπτω .
[3] The verb ἐκπτύω is rarely attested in such a context. This quotation could refer to Jonah (as in Irenaeus, Adversus haereses 6.26). See also Gregorius Nyssenus, In Ecclesiasten 5.290.20 and Georgius Pisides, Bellum Avaricum 174.