Lexical Definition

‎πέλαγος‎ pélagos (pel'-ag-os) sea ^G:N-N
of uncertain affinity

depth, sea.

• deep or open sea, i.e. the main

Abbott-Smith

** πέλαγος, -ους, τό, [in LXX: II Mac 5:21, IV Mac 7:1*;]
the deep sea, the deep, the sea: Ac 27:5; τὸ π. τῆς θαλάσσης, Mt 18:6.
SYN.: θαλάσσα (q.v.); and cf. ἄβυσσος.

Abbott-Smith References

Liddell-Scott-Jones

πέλαγος-ος, εος, τό,

genitive plural πελαγέων [Refs 5th c.BC+]; Epic dialect dative πελάγεσσι (see. below):—the sea, especially high sea, open sea, π. μέγα [Refs 8th c.BC+].; διὰ πελάγους out at sea, opposed to παρὰ γῆν, [Refs 5th c.BC+]: frequently coupled with other words denoting sea, ἁλὸς ἐν πελάγεσσιν [Refs 8th c.BC+]; π. πόντιον, πόντου π., [Refs 5th c.BC+]; ἅλιον π. [Refs 5th c.BC+]

__2 of parts of the sea (θάλασσα), frequently with geographical epithet, Αἰγαῖον π. [Refs 5th c.BC+]
__3 flooded plain, γίνεται π. [Refs 5th c.BC+]
__II metaphorically, of any vast quantity, πλούτου π. [Refs 5th c.BC+]; κακῶν π. a 'sea of troubles', [Refs 4th c.BC+]; ἄτης ἄβυσσον π. [Refs 5th c.BC+]; of great difficulties, μέγ᾽ ἄρα π. ἐλαχέτην τι[Refs]