from The Century Dictionary.
- Having green gills, as oysters.
Sorry, no etymologies found.
And from the green-gilled looks of Maisie Tolliver herself, I diagnosed a long and solitary night with the gin bottle, followed by a fairly ghastly dawn.
A Breath of Snow and Ashes Gabaldon, Diana 2005
The folk bringing up their jars and buckets to be filled looked as though they felt even worse than he did; green-gilled as mushrooms, bruised from being pitched to and fro in the hold like billiard balls, reeking of renewed seasickness and overflowing chamber pots.
Drums of Autumn Gabaldon, Diana 1997
It too had its windows blacked out (seems a bit extreme for a boat, but you never know when Coach might be kayaking by after escaping Amazonian cannibals), and talking was verboten among the green-gilled Castaways.
˜Battersea’ Bill Dawes had succumbed to the isolation and the sun like a green-gilled cabin boy on his first cruise, and lost his mind for a while.