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nounthe back line bounding each end of a tennis or handball court; when serving the server must not step over this line
Similar:
type of: -
nounan imaginary line or standard by which things are measured or comparedtype of:
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nounthe lines a baseball player must follow while running the basestype of:
Definition that contains baseline
- footfault a fault that occurs when the server in tennis fails to keep both feet behind the baseline
- heliocentric parallax the parallax of a celestial body using two points in the earth's orbit around the sun as the baseline
- annual parallax the parallax of a celestial body using two points in the earth's orbit around the sun as the baseline