Boyd’s Bible Dictionary:

(lovely). (1) The Bethlehemite who married Ruth (Book of Ruth; Matt. 1:5). (2) A brazen pillar in the porch of Solomon’s temple (1 Kings 7:21; 2 Chron. 3:17; Jer. 52:21).

Concise Bible Dictionary:

This and JACHIN were the names given to two pillars in the porch of the temple built by Solomon. They are minutely described in 1 Kings 7:15-22 and 2 Chronicles 3:15-17. It will be observed that in Kings and Jeremiah 52:21 The height of each pillar is 18 cubits, but in Chronicles their length is said to be 35 cubits. The explanation of this difference is that in Kings the height of each is given, and in Chronicles the length of the pillars, the two together; so that the 17+ cubits, with perhaps a socket, would be the same as the 18 cubits in Kings. JACHIN signifies “He will establish,” and BOAZ, “in Him [is] strength”—implying that the kingdom will be established in strength and in peace, under the administration of Christ: thus the names are typical of the millennium. There appears to be an allusion to these pillars in Revelation 3:12, the overcomer being made a “pillar” in the temple of God.

Jackson’s Dictionary of Scripture Proper Names:

in him is strength