[1] : The Collaborative International Dictionary of English v.0.48

taxicab \tax"icab\, n.
   an automobile with a professional driver which can be hired
   to carry passengers; -- also called a taxi, and informally
   called a cab or a hack. the driver of a taxicab is
   referred to as a cab driver or cabbie, and sometimes as a
   chauffeur or hackie.

   note: taxicabs may be engaged by a prior appointment made,
         e.g. by telephone, or they may cruise for passengers,
         i.e. they may drive in city streets and stop to pick up
         pasengers when they are signalled by a prospective
         passenger. the act of signalling a taxicab usually by
         a wave of the arm is often called

   to hail a cab or

   to flag down a cab.
      pjc
see also:
taxi cab hack cab driver cabbie chauffeur 
hackie to hail a cab to flag down a cab 

[2] : WordNet (r) 2.0

taxicab
     n : a car driven by a person whose job is to take passengers
         where they want to go in exchange for money syn: cab,
         hack, taxi
see also:
cab hack taxi 

Taxicab >> T Words
Taxicab, definition of term: Taxicab
taxicab_pag1.html