I. walk ‧ ing 1 /ˈwɔːkɪŋ $ ˈwɒːk-/ BrE AmE noun [uncountable]
1 . especially British English the activity or sport of going for walks, especially in the countryside or mountains ⇨ hiking , rambling :
We went walking in the hills.
walking boots/shoes
walking holiday/tour etc (=a holiday on which you walk a lot, especially in the countryside)
2 . the sport of walking long distances as fast as you can without actually running
II. walking 2 BrE AmE adjective [only before noun]
1 . walking dictionary/encyclopedia someone who knows a lot, and always has the information that you want – used humorously
2 . walking disaster (area) someone who always drops things, has accidents, makes mistakes etc – used humorously
⇨ within walking distance at ↑ distance 1 (1)