[syn: thinly, lightly]
4.  in a widely distributed manner; 
- Example: "thinly overgrown mountainside"
The Collaborative International Dictionary of English v.0.48:
Thinly \Thin"ly\, a.
   In a thin manner; in a loose, scattered manner; scantily; not
   thickly; as, ground thinly planted with trees; a country
   thinly inhabited.
   [1913 Webster]
WordNet (r) 3.0 (2006):
thinly
    adv 1: without force or sincere effort; "smiled thinly"
    2: without viscosity; "the blood was flowing thin" [syn:
       thinly, thin] [ant: thick, thickly]
    3: in a small quantity or extent; "spread the margarine thinly
       over the meat"; "apply paint lightly" [syn: thinly,
       lightly] [ant: thickly]
    4: in a widely distributed manner; "thinly overgrown
       mountainside" [ant: densely, thickly]