Related Clues:

• "Hi ___!" (fan's message)
• Player on stage
• Certain Juilliard grad
• Best ___
• Learner of lines
• Thespian, stage performer
• A thespian
• A familiar American mother
• US mother, in short
• 'US mother, informally (3)'
• How the cart gets broken round around in play
• The sort of Croat who takes part?
• One of the 3 down, by the sound of it
• One takes that part
• This will get one to car in a cast