noun
plural tars
[count, noncount]
a very thick, black, sticky liquid made from coal that becomes hard when it cools and that is used especially for road surfaces - see also coal tar
a sticky substance that is formed by burning tobacco
verb
tars; tarred; tarring
[+ obj] :to cover (something) with tar
tar and feather (someone)
to cover (someone) with tar and then with feathers as an old-fashioned punishment
informal :to punish (someone) very severely
tar (someone) with the same brush
to think that (someone) has the same bad qualities and deserves the same blame or criticism as another person because of being connected or associated with that person in some way
US