The Collaborative International Dictionary of English v.0.48:

Loop \Loop\ (l[=oo]p), n. [G. luppe an iron lump. Cf.
   Looping.] (Iron Works)
   A mass of iron in a pasty condition gathered into a ball for
   the tilt hammer or rolls. [Written also loup.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Loups \Loups\, n. pl.; sing. Loup. [F., prop., a wolf.]
   (Ethnol.)
   The Pawnees, a tribe of North American Indians whose
   principal totem was the wolf.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Loup \Loup\ (l[=oo]p), n. (Iron Works)
   See 1st Loop.
   [1913 Webster]

U.S. Gazetteer Counties (2000):

Loup -- U.S. County in Nebraska
   Population (2000):    712
   Housing Units (2000): 377
   Land area (2000):     569.708832 sq. miles (1475.539038 sq. km)
   Water area (2000):    1.308101 sq. miles (3.387965 sq. km)
   Total area (2000):    571.016933 sq. miles (1478.927003 sq. km)
   Located within:       Nebraska (NE), FIPS 31
   Location:             41.870216 N, 99.418360 W
   Headwords:
    Loup
    Loup, NE
    Loup County
    Loup County, NE