Strong's G3149 · Greek

μαστός

mastos · mas-tos'

from the base of 3145; a (properly, female) breast (as if kneaded up)

Scholarly Lexicons

Abbott-Smith Manual Greek Lexicon

 3 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 ).† 

G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain