cat ‧ walk /ˈkætwɔːk $ -wɒːk/ BrE AmE noun [countable]
1 . a long raised structure that ↑ model s walk along in a fashion show SYN runway American English
2 . the catwalk the business of designing clothes for fashion shows
3 . a narrow structure for people to walk on that is high up inside or outside a building