Either of the straight lines extending from home plate down to the first and third bases and marking the limit of the playing area, within which a hit is deemed to be fair.
〔棒球〕边线（由本垒起通过一至三垒直到外场）
Example sentencesExamples
A distance of 320 feet or more along the foul lines, and 400 feet or more to center field is preferable.
The right field foul line was 247 feet, with a 12-foot fence and 40-foot high screen.
In 1936, Forbes Field featured a 300-foot right field foul line ending with a nine and one-half foot concrete wall, capped by an additional 18 feet of wire mesh.
He has ranged from left-center field to the third base foul line for balls.
Ortiz's power from foul line to foul line makes him tough to pitch to.
Definition of foul line in US English:
foul line
nounfaʊl laɪn
Baseball
1Either of the straight lines extending from home plate past first and third bases into the outfield and marking the limit of the area within which a hit is deemed to be fair.
〔棒球〕边线（由本垒起通过一至三垒直到外场）
Example sentencesExamples
The right field foul line was 247 feet, with a 12-foot fence and 40-foot high screen.
In 1936, Forbes Field featured a 300-foot right field foul line ending with a nine and one-half foot concrete wall, capped by an additional 18 feet of wire mesh.
A distance of 320 feet or more along the foul lines, and 400 feet or more to center field is preferable.
He has ranged from left-center field to the third base foul line for balls.
Ortiz's power from foul line to foul line makes him tough to pitch to.
1.1Basketball Either of the lines 15 feet in front of each backboard, from which free throws are made.
Also called free-throw line
Example sentencesExamples
More people have probably scaled Mt. Everest than dunked from the foul line.
Once the players understand the timing and execution, it almost always results in a close shot at the basket or a trip to the foul line for two free throws.
A superstar has to get to foul line and be able to get off a shot in his sweet spot when he needs one.
He also shoots a high percentage from the floor and foul line.
Does a player have to be in contact with the foul line when shooting a free throw?
1.2(in bowling) a line on the alley, perpendicular to the gutters and 60 feet from the head pin.
Example sentencesExamples
According to the rules of bowling, touching or going over the foul line is a foul.
Don't hang around at the foul line or in the other bowler's line of sight, because this is a distraction.
This speed is also based on the ball traveling a straight line from the foul line to the head pin.
But it kept rolling straight along the foul line in fair territory.