mustard

A dull yellowish-brown colour, resembling that of the condiment.

"She chose a lovely mustard dress."

A plant cultivated for its seeds, which are used to make the condiment.

"The field was full of mustard plants."

A poisonous gas, used as a chemical weapon, causing blisters and respiratory damage.

"Mustard gas was deployed in the war."

A pungent yellow or brownish paste made from ground seeds, used as a condiment.

"Would you like some mustard with your chips?"