Related Clues:

• First is the first one
• Thus I am obstructive and draw the line under pressure
• What a noise in an oral way for 11 and 33 across!
• One book might be of service to a number
• One is in the car for a change
• Have a shift for this so the car may shift you (4)
• May be first, but no cardinal
• First is the first one that's a racket, in a manner of speaking
• Might be numerous or noisy with a half-century
• Clutch for a change of it
• One isn't but first is
• First is one but one isn't one
• Change dress in a box in the car
• Wheel with teeth
• Tour de France setting?