The term RESIN USED TO MAKE VARNISH can be broken down into four crossword solutions: LAC (3 letters), MASTIC (6 letters), ELEMI (5 letters), and SHELLAC (7 letters). LAC is a type of resin secreted by certain insects, which is used to make varnish. MASTIC is a type of resin obtained from the MASTIC tree, which is also used to make varnish. ELEMI is a type of resin obtained from the ELEMI tree, which is used to make varnish. Finally, SHELLAC is a type of resin obtained from the LAC bug, which is also used to make varnish.