the base line in baseball

the end line on a basketball court

baseline (configuration management)

Baseline Road (Colorado), a major east-west artery in Boulder, Colorado

bassline in music

baseline (typography)

Baseline Road (Ottawa), a major east-west artery in Ottawa, Ontario

Baseline Station (OC Transpo), a transitway station in Ottawa

Baseline (magazine)

Baseline Road (Arizona), a major east-west artery in Phoenix, Arizona

baseline (surveying)

baseline (sea), the starting point for delimiting a coastal state's maritime zones

baseline (pharmacology)

the back line on a tennis court, and also a style of play in tennis; see tennis strategy