Source : Webster's Revised Unabridged Dictionary (1913)

Piculet \Pic"u*let\, n. [Dim. of {Picus}.] (Zo["o]l.)
   Any species of very small woodpeckers of the genus {Picumnus}
   and allied genera. Their tail feathers are not stiff and
   sharp at the tips, as in ordinary woodpeckers.

Source : WordNet®

piculet
     n : small woodpeckers of South America and Africa and East
         Indies having soft rounded tail feathers