From The Collaborative International Dictionary of English v.0.48 [gcide]:
Meagerly \Mea"ger*ly\, Meagrely \Mea"gre*ly\, adv.
Poorly; thinly.
[1913 Webster] Meagerness
From WordNet (r) 3.0 (2006) [wn]:
meagrely
adv 1: to a meager degree or in a meager manner; "these voices
are meagerly represented at the conference"; "the area is
slenderly endowed with natural resources" [syn:
meagerly, sparingly, slenderly, meagrely] [ant:
amply, fully, richly]