Lexical Definition

‎μαστός‎ mastós (mas-tos') breast ^G:N-M
from the base of ‎μασσάομαι‎

pap.

• a (properly, female) breast (as if kneaded up)

Abbott-Smith

μαστός, -οῦ, ὁ, [in LXX chiefly for שַׁד;]
the breast: pl., Lk 11:27 23:29, Re 1:13 (T, μασθοῖς; WH, App., 149; L, μαζοῖς).†

Abbott-Smith References

Liddell-Scott-Jones

μαστός, μαζός, ὁ,

Epic dialect, Ionic dialect μαζός, [μαστός, μαζός">Refs 8th c.BC+]; twice in codices of Trag., [Refs 5th c.BC+]; Doric dialect μασδός [Refs 3rd c.BC+]; later μασθός [LXX+3rd c.BC+] b, [Refs 4th c.BC+] —usage contradicts the statement of Grammars that μαζός is the man's breast, μαστός, μαζός the woman's:— breast, δεξιτερὸν κατὰ μαζόν [Refs 8th c.BC+]; of men's breasts, βάλε δουρὶ στέρνον ὑπὲρ μαζοῖο [Refs 8th c.BC+]

__2 more frequently of a woman's breast, μαζὸν ἀνέσχε, of Hecuba pleading with Hector, [Refs 8th c.BC+]; γυναῖκά τε θήσατο μαζόν sucked her breast,[Refs 8th c.BC+]; προσέσχε μαζόν, of the mother, [Refs 5th c.BC+]
__2.b rarely of animals, udder, [Refs 3rd c.BC+]
__2.c generally, of the breasts of all mammalia, [Refs 4th c.BC+]
__II metaphorically, any round, breast-shaped object:
__II.1 round hill, knoll, [Refs 5th c.BC+]
__II.2 round piece of wool fastened to the edge of nets, [Refs 5th c.BC+]
__II.3 at Paphos, breast-shaped cup, [Refs 2nd c.AD+]

_{LSJ Scripture Refs: LXX.Isa.32.12 ☩ Rev.1.13}