Definitions
There are 3 meanings of the phrase
Foul Line.
Foul Line - as a noun
A line from which basketball players take penalty shots
A line across a bowling alley that a bowler must not cross
Lines through 1st and 3rd base indicating the boundaries of a baseball field
Example Sentences
"He stepped over the foul line while taking his free throw, resulting in a violation."
"The baseball player hit a home run that landed just inside the left foul line."
"The basketball referee signaled a three-point shot as the player released the ball behind the foul line."
"The tennis player served the ball, making sure it landed inside the opponent's foul line."
"The soccer player was cautioned for crossing the foul line before the referee's whistle."