tar

nouns

any of various dark heavy viscid substances obtained as a residue
pitch, tar
a man who serves as a sailor
Jack, Jack-tar, gob, mariner, old salt, sea dog, seafarer, seaman, tar

verbs

coat with tar
"tar the roof"; "tar the roads"
tar
is a type of (narrower)
put a coat on; cover the surface of; furnish with a surface
"coat the cake with chocolate"
coat, surface