towbar
tow·bar /ˈtəʊbɑː $ ˈtoʊbɑːr/ noun [countable] British English TTCa metal bar on the back of a car for towing a caravan or boat 〔用以牵引车、船等的〕牵引杠
towbartow‧bar /ˈtəʊbɑː $ ˈtoʊbɑːr/
noun [countable] British Englisha metal bar on the back of a car for
towing a
caravan or boat