Related Clues:
- Emotionless, as a stare
- Hole in one's knowledge
- Not written on, as paper
- Spark-plug specification
- Spark plug measurement
- Separating space
- Empty space left in row
- Alibi problem
- Word after age or gender
- Opening in Malaga penthouse
- Orthodontic concern
- Orthodontia concern
- Space on a form
- Break, in a fence say
- Poker-faced barman gets first character¿s assumed name on the weekend