AB. The fifth month of the Hebrew year, coinciding approximately with early August (Num.33.38). Calendar.

AB ăb (אַב, H10003). The fifth month (July-August) in the Heb. calendar. See nodetitle.

International Standard Bible Encyclopedia (1915)

The name of the fifth month in the Hebrew calendar, the month beginning in our July. The name does not appear in the Bible, but Josephus gives it to the month in which Aaron died (Ant., IV, iv, 6; compare Nu 33:38).