From WordNet (r) 3.0 (2006):
Walker
n 1: New Zealand runner who in 1975 became the first person to
run a mile in less that 3 minutes and 50 seconds (born in
1952) [syn: Walker, John Walker]
2: United States writer (born in 1944) [syn: Walker, Alice
Walker, Alice Malsenior Walker]
3: a person who travels by foot [syn: pedestrian, walker,
footer]
4: a shoe designed for comfortable walking
5: a light enclosing framework (trade name Zimmer) with rubber
castors or wheels and handles; helps invalids or the
handicapped or the aged to walk [syn: walker, Zimmer,
Zimmer frame]
6: an enclosing framework on casters or wheels; helps babies
learn to walk [syn: walker, baby-walker, go-cart]