bitt(noun, verb) noun1. a strong post (as on a wharf or quay or ship for attaching mooring lines)Similar word(s): bollardDefinition categories: man–made, post verb1. secure with a bitt- bitt the ship lineDefinition categories: contact, fasten, fix, secureSentences with bitt as a verb:- to bitt the cable, in order to fasten it or to slacken it gradually, which is called veering away