To lend beauty to: "the pale mimosas that adorned the favorite promenade"(Ronald Firbank).
To enhance or decorate with or as if with ornaments: "[He] requires the presence of titles to legitimate and adorn . . . his imperfect status"(Cynthia Ozick).
[Middle English adornen, from Old French adourner, from Latin adōrnāre : ad-, ad- + ōrnāre, to decorate; see ar- in Indo-European roots.] a·dorn'er n.
c.1374, from O.Fr. aourner, from L. adornare "equip, embellish," from ad- "to" + ornare "prepare, furnish, adorn, fit out," from stem of ordo "order" (see order). The -d- was reinserted by Fr. scribes 14c., in Eng. from late 15c. (see ad-).