The Collaborative International Dictionary of English v.0.48:

Floorwalker \Floor"walk`er\, n.
   One who walks about in a large retail store as an overseer
   and director. [U.S.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

floorwalker
    n 1: an employee of a retail store who supervises sales
         personnel and helps with customer problems; "a floorwalker
         is called a shopwalker in Britain" [syn: floorwalker,
         shopwalker]

Moby Thesaurus II by Grady Ward, 1.0:

51 Moby Thesaurus words for "floorwalker":
   Big Brother, agent, auditor, boatswain, boss, chief, clerk,
   comptroller, controller, floor manager, floorman, foreman, gaffer,
   ganger, head, headman, inspector, monitor, noncommissioned officer,
   overman, overseer, proctor, sales agent, sales engineer,
   sales force, sales manager, sales personnel, salesclerk, salesgirl,
   saleslady, salesman, salespeople, salesperson, saleswoman, scalper,
   seller, selling agent, shop assistant, shop clerk, sirdar,
   slave driver, store clerk, straw boss, subforeman, super,
   superintendent, supervisor, surveyor, taskmaster, ticket scalper,
   visitor