mandrel / mandrill [ˈmændrəl]
mandrel (mandril) – n. & v. – n. – 1. a miner’s pick; 2. a shaft in a lathe or circular saw; 3. History – a spindle on a phonograph; v. – forge a shape using a long metal tube
mandrill – n. – 1. a West African forest baboon, Mandrillus sphinx, with a bright red and blue face; 2. similar baboons of the same genus