Boyd’s Bible Dictionary:

(milk). Daughter or any female descendant (Gen. 24:48); female inhabitant (Gen. 6:2; Isa. 10:32; 23:12; Luke 23:28); singing birds (Eccl. 12:4).

Concise Bible Dictionary:

Besides the ordinary meaning of this word it is used also for grand-daughter or female descendant in general (Luke 1:5); also as belonging to a race or country, or to Zion or Israel (Gen. 27:46; Num. 25:1; 2 Kings 19:21; Luke 23:28). The term is also applied to towns and villages associated with some city, as may be seen in the margin of Numbers 21:25.