The Collaborative International Dictionary of English v.0.48:

Loo \Loo\ (l[=oo]), v. t. [imp. & p. p. Looed (l[=oo]d); p.
   pr. & vb. n. Looing.]
   To beat in the game of loo by winning every trick. [Written
   also lu.] --Goldsmith.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Lu \Lu\ (l[=u]), n. & v. t.
   See Loo.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Lu \Lu\, n. (Chem.)
   The chemical symbol for lutetium.
   [PJC]

WordNet (r) 3.0 (2006):

Lu
    n 1: a trivalent metallic element of the rare earth group;
         usually occurs in association with yttrium [syn:
         lutetium, lutecium, Lu, atomic number 71]

V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

LU
       Logical Unit (NAU)


The Free On-line Dictionary of Computing (30 December 2018):

lu

    The country code for Luxembourg.

   (1999-01-27)