force play

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A play in which a runner is put out when forced by the batter to move to the next base and a fielder holding the ball touches that base first.
• noun The condition under which such a play can be made.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun baseball A play in which a baserunner on first base is required to advance to second base because the batter has become a runner, or a runner on second or third base is required to advance because a runner on a preceding base is so forced.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a putout of a base runner who is required to run; the putout is accomplished by holding the ball while touching the base to which the runner must advance before the runner reaches that base