Millo
    (Heb. always with the article, "the" Millo). (1.) Probably the
    Canaanite name of some fortification, consisting of walls filled
    in with earth and stones, which protected Jerusalem on the north
    as its outermost defence. It is always rendered Akra i.e., "the
    citadel", in the LXX. It was already existing when David
    conquered Jerusalem (2 Sam. 5:9). He extended it to the right
    and left, thus completing the defence of the city. It was
    rebuilt by Solomon (1 Kings 9:15, 24; 11:27) and repaired by
    Hezekiah (2 Chr. 32:5).
      (2.) In Judg. 9:6, 20 it is the name of a rampart in Shechem,
    probably the "tower of Shechem" (9:46, 49).
 Millo, fullness