The Collaborative International Dictionary of English v.0.48:

Meanly \Mean"ly\, adv. [Mean middle.]
   Moderately. [Obs.]
   [1913 Webster]

         A man meanly learned himself, but not meanly
         affectioned to set forward learning in others.
                                                  --Ascham.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Meanly \Mean"ly\, adv. [From Mean low.]
   In a mean manner; unworthily; basely; poorly; ungenerously.
   [1913 Webster]

         While the heaven-born child
         All meanly wrapt in the rude manger lies. --Milton.
   [1913 Webster]

         Would you meanly thus rely
         On power you know I must obey ?          --Prior.
   [1913 Webster]

         We can not bear to have others think meanly of them
         [our kindred].                           --I. Watts.
   [1913 Webster]

WordNet (r) 3.0 (2006):

meanly
    adv 1: in a nasty ill-tempered manner; "`Don't expect me to help
           you,' he added nastily" [syn: nastily, meanly]
    2: in a despicable, ignoble manner; "this new leader meanly
       threatens the deepest values of our society" [syn: meanly,
       scurvily, basely]
    3: poorly or in an inferior manner; "troops meanly equipped"
    4: in a miserly manner; "they lived meanly and without
       ostentation" [syn: meanly, humbly]