δελφιναῖος

From LSJ

καὶ οὐκ ἔστιν πᾶν πρόσφατον ὑπὸ τὸν ἥλιον → and there's nothing new under the sun (Eccl. 1:9 LXX)

Source

Spanish (DGE)

-α, -ον
de delfín, ἔλαιον como combustible A.Matt.18.