'Slumbery' definitions:

Definition of 'slumbery'

From: WordNet
adjective
Inclined to or marked by drowsiness; "slumberous (or slumbrous) eyes"; "`slumbery' is archaic"; "the sound had a somnolent effect" [syn: slumberous, slumbery, slumbrous, somnolent]

Definition of 'Slumbery'

From: GCIDE
  • Slumbery \Slum"ber*y\, a. Sleepy. [Obs.] --Chaucer. [1913 Webster]