walk-on

[ wawk-on, -awn ]
/ ˈwɔkˌɒn, -ˌɔn /

noun

Also called walking part. a small part in a play or other entertainment, especially one without speaking lines. Compare bit2(def 6).
an entertainer or actor who plays such a part.
an athlete trying out for a team who has not been drafted, specifically invited, scouted, awarded a scholarship, etc.

Origin of walk-on

First recorded in 1900–05; noun use of verb phrase walk on

British Dictionary definitions for walk on

walk-on

noun

  1. a small part in a play or theatrical entertainment, esp one without any lines
  2. (as modifier)a walk-on part

adjective

(of an aircraft or air service) having seats to be booked immediately before departure rather than in advance