The Collaborative International Dictionary of English v.0.48:

pedicab \ped"i*cab\ (p[e^]d"[i^]*k[a^]b) n.
   a tricycle (usually propelled by pedalling); used in the
   Orient for transporting passengers for hire; as, boys who
   once pulled rickshaws now pedal pedicabs.

   Syn: cycle rickshaw.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

pedicab
    n 1: a tricycle (usually propelled by pedalling); used in the
         Orient for transporting passengers for hire; "boys who once
         pulled rickshaws now pedal pedicabs" [syn: pedicab,
         cycle rickshaw]