What is the meaning of Marigold?

Any of the Old World plants, of the genus Calendula, with orange, yellow or reddish flowers.

Any of the New World plants, of the genus Tagetes, with orange, yellow or reddish flowers.

A million pounds sterling.

Alternative form of Marigold (rubber glove for cleaning)

Having the color of marigolds, a bright yellowish-orange hue.

Source: wiktionary.org