As a noun sheely
is a shilfa, or chaffinch.
As an adverb sheenly is
(poetic|archaic) brightly.
sheenly
English
Adverb
(
en adverb)
(poetic, archaic) brightly
* William Motherwell
- The bay glitters sheenly in sunlight, / No oar shivers now its clear mirror.
* (Elizabeth Barrett Browning)
- Shapes of brightness overlean thee, / With their diadems of youth / Striking on thy ringlets sheenly