an ornamented ceremonial pipe, used by certain Indian tribes as a symbol of peace and adopted by the white traders in their dealings with these Indians.
1703  (1905)  The Calumet of Peace is made of certain stones or of marble. . . .
1774  (1934)  "I presented them with a little Tobacco, and smoak'd my Calimett of Peace with them."
1934  . . . talking over the campfire . . . the means of causing erstwhile traditionally hostile tribes to smoke, at last, the calumet of peace together and to seal forever the bonds of friendship with each other.