'Baal' definitions:

Definition of 'Baal'

noun

Any of numerous local fertility and nature deities worshipped by ancient Semitic peoples; the Hebrews considered Baal a false god

From: GCIDE

Baal \Ba"al\ (b[=a]"al), n.; Heb. pl. Baalim (-[i^]m). [Heb. ba'al lord.]
1. (Myth.) The supreme male divinity of the Phoenician and Canaanitish nations. [1913 Webster]
Note: The name of this god occurs in the Old Testament and elsewhere with qualifying epithets subjoined, answering to the different ideas of his character; as, Baal-berith (the Covenant Baal), Baal-zebub (Baal of the fly). [1913 Webster]
2. pl. The whole class of divinities to whom the name Baal was applied. --Judges x. 6. [1913 Webster]

From: GCIDE

Bel \Bel\, n. The Babylonian name of the god known among the Hebrews as Baal. See Baal. --Baruch vi. 41. [1913 Webster]

Baal lord.
The name appropriated to the principal male god of the Phoenicians. It is found in several places in the plural BAALIM (Judg. 2:11; 10:10; 1 Kings 18:18; Jer. 2:23; Hos. 2:17). Baal is identified with Molech (Jer. 19:5). It was known to the Israelites as Baal-peor (Num. 25:3; Deut. 4:3), was worshipped till the time of Samuel (1 Sam 7:4), and was afterwards the religion of the ten tribes in the time of Ahab (1 Kings 16:31-33; 18:19, 22). It prevailed also for a time in the kingdom of Judah (2 Kings 8:27; comp. 11:18; 16:3; 2 Chr. 28:2), till finally put an end to by the severe discipline of the Captivity (Zeph. 1:4-6). The priests of Baal were in great numbers (1 Kings 18:19), and of various classes (2 Kings 10:19). Their mode of offering sacrifices is described in 1 Kings 18:25-29. The sun-god, under the general title of Baal, or "lord," was the chief object of worship of the Canaanites. Each locality had its special Baal, and the various local Baals were summed up under the name of Baalim, or "lords." Each Baal had a wife, who was a colourless reflection of himself.
A Benjamite, son of Jehiel, the progenitor of the Gibeonites (1 Chr. 8:30; 9:36).
The name of a place inhabited by the Simeonites, the same probably as Baal-ath-beer (1 Chr. 4:33; Josh. 19:8).

Baal, master; lord