'catwalk' definitions:

Definition of 'catwalk'

From: WordNet
noun
Narrow platform extending out into an auditorium; "models displayed clothes on a catwalk at the fashion show"
noun
Narrow pathway high in the air (as above a stage or between parts of a building or along a bridge)

Definition of 'catwalk'

From: GCIDE
  • catwalk \catwalk\ n.
  • 1. A narrow walkway projecting from a stage into the seating area of a theater; it is used, e. g. by models displaying clothes on it at a fashion show. Called also runway. [WordNet 1.5 +PJC]
  • 2. A narrow walkway high in the air to allow workers access to parts of a structure otherwise difficult to reach. Catwalks are located, e.g. above a stage in a theater, between parts of a building, along the side of a bridge, on the outside of a railroad car, on the outside of a large storage tank, etc. [WordNet 1.5 +PJC]