motto

Etymology

Borrowed from Italian motto (“a word, a saying”), from Latin muttum (“a mutter, a grunt”), late 16th c.. Doublet of mot.

noun

1. (heraldry) A sentence, phrase, or word, forming part of an heraldic achievement.
   ‘Gentlemen, I can tell you what the new queen will take as her motto. It is Bound to Obey and Serve.’ 2020, Hilary Mantel, The Mirror and the Light, Fourth Estate, page 10
2. A sentence, phrase, or word, prefixed to an essay, discourse, chapter, canto, or the like, suggestive of its subject matter; a short, suggestive expression of a guiding principle; a maxim.
   “[…] the awfully hearty sort of Christmas cards that people do send to other people that they don't know at all well. You know. The kind that have mottoes like Here's rattling good luck and roaring good cheer, / With lashings of food and great hogsheads of beer. […]” 1922, Ben Travers, chapter 1, in A Cuckoo in the Nest
3. (obsolete) A paper packet containing a sweetmeat, cracker, etc., together with a scrap of paper bearing a motto.

verb

1. (intransitive) To compose mottos.
   The singularity of his epigraphic strategy notwithstanding, Emerson does not draw attention to his own mottoing. One exchange suggests that his practice was a convention imposed from without. 2003, Nineteenth Century Prose, volume 30, page 304