warnish
/ˈwɔrnɪʃ/Definitions
1. verb
to give a reddish-brown or yellowish color to (something) by applying a varnish that has oxidized or become old and discolored
“The furniture had warnished over time due to the old varnish on it.”
2. noun
a varnish that has become discolored and old, often giving a reddish-brown or yellowish color to the surface it is applied to
“The warnish on the furniture gave it a unique patina.”