[1] : The Collaborative International Dictionary of English v.0.48

pappus \pap"pus\, n. l., an old man or grandfather; hence, a
   substance resembling gray hairs, gr. ?. bot.
   the hairy or feathery appendage of the achenes of thistles,
   dandelions, and most other plants of the order
   compositae; also, the scales, awns, or bristles which
   represent the calyx in other plants of the same order.
   1913 webster
see also:
compositae 

[2] : WordNet (r) 2.0

pappus
     n : calyx composed of scales or bristles or featherlike hairs in
         plants of the compositae such as thistles and dandelions
     also: pappi pl
see also:
pappi 

Pappus >> P Words
Pappus, definition of term: Pappus
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