cipher / sypher [ˈsaifɜr]
cipher – n. – 1. a secret writing code and/or its key; 2. the arithmetical symbol ©; 3. a person or thing of no importance; 4. a monogram; 5. any Arabic numeral; 6. continuous sounding of an organ pipe due to a mechanical defect; v. – 1. put into secret writing; 2. calculate or do arithmetic
sypher – v. – 1. carpentry – to make a lap-joint by overlapping two bevelled or chamfered plank edges so as to leave a plane surface (flat or flush)