no-claims bonus n (Insurance) a reduction on an insurance premium, esp one covering a motor vehicle, if no claims have been made within a specified period. Also called: no-claim bonus Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014