(n.) A subdivision into four parts.

achievement alerion animal charge annulet argent armorial bearings armory arms assembly-line housing azure bandeau bar bar sinister baton bearings bend bend sinister billet billeting blazon blazonry bordure broad arrow cadency mark canton chaplet charge chevron chief coat of arms cockatrice coronet crescent crest cross cross moline crown device difference differencing domiciliation doss eagle ermine ermines erminites erminois escutcheon falcon fess fess point field file flanch fleur-de-lis fret fur fusil garland griffin gules gyron hatchment helmet heraldic device honor point hospitality housing housing bill housing development housing problem impalement impaling inescutcheon label lion living quarters lodging lodgment lower-income housing lozenge mantling marshaling martlet mascle metal motto mullet nombril point octofoil or ordinary orle pale paly pean pheon purpure quadripartition quadrisection quarter rose sable saltire scutcheon shield slum clearance spread eagle subdivision subordinary tenne tincture torse tract transient lodging tressure unicorn urban renewal vair vert wreath yale