/ ˈpælət; NAmE / noun
1.
a thin board with a hole in it for the thumb to go through, used by an artist for mixing colours on when painting
2.
[ usually sing. ] ( technical ) the colours used by a particular artist :
Greens and browns are typical of Ribera's palette.
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WORD ORIGIN
late 18th cent.: from French , diminutive of pale shovel, from Latin pala spade.