The Collaborative International Dictionary of English v.0.48:

Daffodil \Daf"fo*dil\ (d[a^]f"f[-o]*d[i^]l), n. [OE. affodylle,
   prop., the asphodel, fr. LL. affodillus (cf. D. affodille or
   OF. asphodile, aphodille, F. asphod[`e]le), L. asphodelus,
   fr. Gr. 'asfo`delos. The initial d in English is not
   satisfactorily explained. See Asphodel.] (Bot.)
   (a) A plant of the genus Asphodelus.
   (b) A plant of the genus Narcissus (Narcissus
       Pseudo-narcissus). It has a bulbous root and beautiful
       flowers, usually of a yellow hue. Called also
       daffodilly, daffadilly, daffadowndilly,
       daffydowndilly, etc.
       [1913 Webster]

             With damask roses and daffadillies set. --Spenser.
       [1913 Webster]

             Strow me the ground with daffadowndillies,
             And cowslips, and kingcups, and loved lilies.
                                                  --Spenser.
       [1913 Webster]

             A college gown
             That clad her like an April daffodilly. --Tennyson
       [1913 Webster]

             And chance-sown daffodil.            --Whittier.
       [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Easter lily \Eas"ter lil`y\ (Bot.)
   Any one of various lilies or lilylike flowers which bloom
   about Easter; specif.:
   (a) The common white lily (Lilium candidum), called also
       Annunciation lily.
   (b) The larger white lily (Lilium longiflorum eximium, syn.
       L. Harrisii) called also Bermuda lily.
   (c) The daffodil (Narcissus Pseudo-Narcissus).
   (d) The Atamasco lily.
       [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

Narcissus pseudonarcissus
    n 1: any of numerous varieties of Narcissus plants having showy
         often yellow flowers with a trumpet-shaped central crown
         [syn: daffodil, Narcissus pseudonarcissus]