Venetian painter
(Other definitions for tintoretto that I've seen before include "16th century Italian painter" , "Italian painter, d. 1594" , "Artist" .)
'venetian painter' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for tiepolo that I've seen before include "Italian artist" , "Old master" , "Giovanni -, Italian baroque painter" , "I used to paint" , "C18 Venetian painter" .)