μήτηρ
genitive,
μητρός, ἡ,
[in LXX chiefly for אֵם ;]
mother: Mat.1:18 2:11, al.; figuratively, of one who takes the place of a mother, ἰδοὺ, ἡ μ. μου, Mat.12:49 (cf. Mat.12:50, Mrk.3:35, Jhn.19:27, Rom.16:13, 1Ti.5:2); of a city, ἥτις ἐσὶν μ. ἡμῶν, Gal.4:26; symbolically of Babylon, ἡ μ. τ. πορνῶν, Rev.17:5
(AS)