Glossary Updated April 21, 2025 By Lines.comOver/UnderA type of wager where the bettor can place a bet on the total number of points, goals, or runs scored in a game or event. The over is defined as the number more than the set line, while the under indicated the number less than the set line. For example, if the bookmaker sets it to 5 goals, one better can predict 4 (under) or 6 (over).