Madam Irma Pince
"What are you looking for, boy?"
-- Madam Pince
Librarian at Hogwarts who looks like an underfed vulture (CS10) with a shriveled face, and spends more time policing the library than helping with research (OP29). Pince is highly suspicious of the students and places nasty spells on books to make sure they're returned on time (QA). She is attracted to Argus Filch (HBP30).
Distinguishing features: thin and irritable.
Appearance: thin, looks like an underfed vulture (CS10), shriveled face (OP29), vulture-like (GF26).
Field: librarian, old-fashioned version ("guardian" of the books).
Interests: following rules, protecting her books from nasty, scabby little students.
Attraction: Argus Filch (HBP).
Name origin? Pince=French for "pinch," as in "pince-nez" glasses, an old-fashioned type that stay on by pinching the nose at the bridge.
JKR on Madam Pince: "I would like to apologize for you and any other librarians (crowd laughs) present here today and my get-out clause is always if they'd had a pleasant, helpful librarian, half my plots would be gone. 'Cause the answer invariably is in a book but Hermione has to go and find it. If they'd had a good librarian, that would have been that problem solved. So ... sorry." (HCG)