From BiblePortal Wikipedia

Watson's Biblical & Theological Dictionary [1]

the eighth month of the ecclesiastical year of the Jews, and the second month of the civil year. It answers to October. and consists of twenty-nine days. On the sixth day of this month the Jews fasted, because on that day Nebuchadnezzar put to death the children of Zedekiah in the presence of their unhappy father, whose eyes, after they had been witnesses of this sad spectacle, he ordered to be put out,  2 Kings 25:7 . We find the name of this month mentioned in Scripture but once,  1 Kings 6:38 .

Smith's Bible Dictionary [2]

Bul. (Rain). See Month .

Hastings' Dictionary of the Bible [3]

BUL .   1 Kings 6:38 , the Canaanite name for the month which the Babylonians termed Marcheshvan . See time.

American Tract Society Bible Dictionary [4]

Occurring only in  1 Kings 6:38 , applied to the eighth month, usually called Marchesvan, which see. Solomon's temple was finished in Bul.

Easton's Bible Dictionary [5]

 1 Kings 6:38Month

People's Dictionary of the Bible [6]

Bul.  1 Kings 6:38. See Month.

Holman Bible Dictionary [7]

 1 Kings 6:38

King James Dictionary [8]

BUL,n. The common flounder.

Morrish Bible Dictionary [9]

See Months

Cyclopedia of Biblical, Theological and Ecclesiastical Literature [10]

(Heb. id. בּוּל , for יְבוּל , Rain, from the season of the year; Sept. Βαάλ ), the eighth ecclesiastical month of the Jewish year ( 1 Kings 6:38), answering in general to October, (See Calendar) (Jewish ) , and corresponding, according to the rabbins ( Rosh Hash Ana, c. 2; Tanchum Hieros. in loc.), to MARCHESVAN (See Marchesvan) (q.v.). According to Benfey ( Ueb. Die Monatsnamen Einger Alien Volker, p. 18), it may have derived its name from the worship of Baal (comp. the Sept. rendering), as other months appear to have been in like manner consecrated to special deities. (See Month).

International Standard Bible Encyclopedia [11]

bul ( בּוּל , būl ): Name of the 8th month of the Jewish year ( 1 Kings 6:38 ). It is of Phoenician origin and signifies the month of rain, the beginning of the rainy season. See Calendar .