(cheerleading) A stunt in which three or more bases toss a flyer into the air.

(baseball) Having a baserunner on first base, second base, and third base.

plural of basket toss

(baseball) A metric used to evaluate the effectiveness of a hitter; the sum of on-base percentage and slugging percentage.

plural of on-base percentage

(baseball) The frequency with which a hitter successfully reaches first base.

(roofing) Plies or strips of roof membrane material used to close-off and/or seal a roof at the horizonta-to-vertical intersections. Membrane base flashing covers the edge of the field membrane.

(roofing) an impregnated, saturated, or coated felt placed as the first ply in some low-slope roof systems.

A town in Colorado. / A city and town in Idaho.

(geography) An extent of land where water from rain or snow melt drains downhill into a river or series of rivers.