The thesaurus of synonyms and related words is fully integrated into the dictionary. Click on the thesaurus category heading under the button in an entry to see the synonyms and related words for that meaning. The ear and hearing:anvil, audio-, auditory... This is the British English definition of tone deaf.
In addition, the V in V6 stands for the V or Vee engine. A V engine is a design that features cylinders and pistons aligned along two planes to form the familiar V shape. V engines are used in most cars due to their smaller size compared to inline engines.
VAR stands for video assistant referee. It is actually a team of three people who work together to review certain decisions made by the main referee by watching video replays of the relevant incidents. That team is comprised of the video assistant referee himself (who will be a current or former referee), his assistant and a replay operator.