Forget-me-not \For*get"-me-not`\, n. [Cf. G. vergissmeinnicht.] (Bot.) A small herb, of the genus {Myosotis} ({M. palustris}, {incespitosa}, etc.), bearing a beautiful blue flower, and extensively considered the emblem of fidelity. Note: Formerly the name was given to the {Ajuga Cham[ae]pitus}.