daffodil /ˈdæfəˌdɪl/noun 2adjective 1forms 3 noun2 •A bulbous plant of the genus Narcissus, with yellow flowers and a trumpet shaped corona, especially Narcissus pseudonarcissus, the national flower of Wales.When daffadils begin to peere, / With heigh the Doxy ouer the dale, / Why then comes in the sweet o’ the yeere, / For the red blood raigns in yͤ winters pale. — 1610 •A brilliant yellow color, like that of a daffodil.Where ships of purple gently toss / On seas of daffodil, / Fantastic sailors mingle, / And then—the wharf is still. — 1887 adjective1 •Of a brilliant yellow color, like that of a daffodil. formsdaffodils · more daffodil · most daffodil