The Collaborative International Dictionary of English v.0.48:

Loos \Loos\, n. [OE. los, fr. OF. los, laus.]
   Praise; fame; reputation. [Obs.] --Spenser.
   [1913 Webster]

         Good conscience and good loos.           --Chaucer.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Loos
    n 1: Austrian architect (1870-1933) [syn: Loos, Adolf Loos]