Definitions
1.verbTo prevent, delay or hinder something by taking precautionary or anticipatory measures; to avert."Fred forestalled disaster by his prompt action."
2.verbTo preclude or bar from happening, render impossible.
3.verbTo purchase the complete supply of a good, particularly foodstuffs, in order to charge a monopoly price.
4.verbTo anticipate, to act foreseeingly.
5.verbTo deprive (with of).
6.verbTo obstruct or stop up, as a road; to stop the passage of a highway; to intercept on the road, as goods on the way to market.