Source : Webster's Revised Unabridged Dictionary (1913)

Pubescent \Pu*bes"cent\, a. [L. pubescens, -entis, p. pr. of
   pubescere to reach puberty, to grow hairy or mossy, fr. pubes
   pubes: cf. F. pubescent.]
   1. Arrived at puberty.

            That . . . the men (are) pubescent at the age of
            twice seven, is accounted a punctual truth. --Sir T.
                                                  Browne.

   2. Covered with pubescence, or fine short hairs, as certain
      insects, and the leaves of some plants.

Source : WordNet®

pubescent
     adj 1: (of animals especially human beings) having arrived at the
            onset of puberty (the age at which sex glands become
            functional) but not yet fully mature; "the budding
            breasts of a pubescent girl and the downy chin of
            pubescent boy"
     2: covered with fine soft hairs or down; "downy milkweed seeds"
        [syn: {downy}, {puberulent}, {sericeous}]