Entry from British & World English dictionary
1A race between rowing crews. 1.1 (the Boat Race) The annual boat race between Oxford and Cambridge. First rowed at Henley in 1829, it has been held over its present course, from Putney to Mortlake (6.8 km, 4.25 miles), since 1845. 2British rhyming slang A person’s face.
Definition of boat race in: