Abbott-Smith Manual Greek Lexicon
γάλα (G1051)
5 γάλα , -ακτος, τό [in LXX for חלב ;] milk : I Co 9:7 . Metaph., of elementary Christian teaching: I Co 3:2 , He 5:12 , 13 ; τὸ λογικὸν ἄδολον γ. , the rational (spiritual) genuine milk (v. Hort, in l.), I Pe 2:2 (in support of AV, milk of the word , v. ICC , in l.).†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain