centred dot

noun printing

Also called (esp US and Canadian): bullet a heavy dot (·) used to draw attention to a particular paragraph
a dot placed at a central level in a line of type or writing

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012