GR translation: guiches

[Mike Jing]

V186.2-6, P188.11-15  Well . . . she must have come out of the sea. At this
distance, some 20 meters, she is only a dim figure in a black bombazine
frock that reaches to her knees, her bare legs long and straight, a short
hood of bright blonde hair keeping her face in shadow, coming up in guiches
to touch her cheeks.

What are "guiches" exactly? I can't find the word in the dictionary.