say it: WAW-kahn
walk-on is a noun and adjective meaning "plays a small part in a dramatic production". It carries 2 recorded senses.
plays a small part in a dramatic production
not capable of or especially not involving speech or spoken lines
“had a nonspeaking role in the play”
Definitions, synonyms and semantic relations for walk-on come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.