| n. | 1. | The lower or under side of a sirloin of beef; the fillet. |
| v. t. | 1. | To cut away, as the side of an object, so as to leave an overhanging portion. |
| 2. | to sell goods or services at a price below that of (the competition or a competitor's price). | |
| 3. | to weaken the effectiveness of; to undermine or sabotage (an activity). | |
| 4. | (Forestry) To cut a notch in one side of (a tree) so as to control the direction in which the tree falls when it is felled. | |
| p. a. | 1. | Cut away below. |
| Noun | 1. | undercut - the material removed by a cut made underneath |
| 2. | undercut - the tender meat of the loin muscle on each side of the vertebral column Synonyms: tenderloin | |
| 3. | undercut - a notch cut in the trunk of tree in order to determine the direction of its fall | |
| 4. | undercut - (sports) a stroke that puts reverse spin on the ball; "cuts do not bother a good tennis player" Synonyms: cut | |
| 5. | undercut - a cut made underneath to remove material | |
| Verb | 1. | undercut - sell cheaper than one's competition Synonyms: undersell |
| 2. | undercut - cut away material from the underside of (an object) so as to leave an overhanging portion in relief | |
| 3. | undercut - cut away the underpart of; "undercut a vein of ore" | |
| 4. | undercut - strike (the ball) in golf, tennis, or hockey obliquely downward so as to give a backspin or elevation to the shot | |
| 5. | undercut - cut obliquely into (a tree) below the main cut and on the side toward which the tree will fall |