(baseball) an advance to first base by a batter who receives four balls
"he worked the pitcher for a base on balls"
a slow gait of a horse in which two feet are always on the ground
"The old gelding moved at such a steady walk that he never lost his balance, even when stepping over the muddy puddle."
A trip made by walking.
"The researcher noted that a mutation in the sensor domain of Walk, a particular histidine kinase, prevented the bacteria from detecting phosphate levels in the soil."
A particular histidine kinase
use one's feet to advance; advance by steps
"Walk, don't run!"
"We walked instead of driving"
"She walks with a slight limp"
"The patient cannot walk yet"
"Walk over to the cabinet"
obtain a base on balls
"The batter decided to walk after the pitcher threw four consecutive balls outside the strike zone."
traverse or cover by walking
"Walk the tightrope"
"Paul walked the streets of Damascus"
"She walks 3 miles every day"
give a base on balls to
"The pitcher walked the batter after throwing three straight balls outside the zone."
be or act in association with
"We must walk with our dispossessed brothers and sisters"
"Walk with God"
take a walk; go for a walk; walk for pleasure
"The lovers held hands while walking"
"We like to walk every Sunday"
To move on the feet by alternately setting each foot (or pair or group of feet, in the case of animals with four or more feet) forward, with at least one foot on the ground at all times. Compare run.
"After finishing his morning jog, he slowed down to a leisurely walk along the beach."
A surname.
"My next-door neighbor is Mr. Walk, and he always greets me while walking his dog."