@munickat,
munickat wrote:
I do not understand the context in which "merds" is used in "Gerontion," a T.S. Eliot poem :
"The goat coughs at night in the field over head / Rocks, moss, stonecrop, iron merds. . . ."
you missed out a comma.
Rocks, moss, stonecrop, iron, merds.
The rocks and the moss, the stonecrop, the iron and the merds, comprise the landscape's waste, everything that civilisation rejects.