The Collaborative International Dictionary
Aquila alba
Aquila \Aq"ui*la\, n.; pl. Aquil[ae]. [L., an eagle.]
(Zo["o]l.) A genus of eagles.
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(Astron.) A northern constellation southerly from Lyra and Cygnus and preceding the Dolphin; the Eagle.
Aquila alba [L., white eagle], an alchemical name of calomel.
--Brande & C.
Wiktionary
aquila alba
n. (context obsolete alchemy English) calomel