The Collaborative International Dictionary of English v.0.48:

Hindrance \Hin"drance\, n. [See Hinder, v. t.]
   1. The act of hindering, or the state of being hindered.
      [1913 Webster]

   2. That which hinders; an impediment.
      [1913 Webster]

            What various hindrances we meet.      --Cowper.
      [1913 Webster]

            Something between a hindrance and a help.
                                                  --Wordsworth.

   Syn: Impediment; obstruction; obstacle; difficulty;
        interruption; check; delay; restraint.
        [1913 Webster]

WordNet (r) 3.0 (2006):

hindrance
    n 1: something immaterial that interferes with or delays action
         or progress [syn: hindrance, hinderance, deterrent,
         impediment, balk, baulk, check, handicap]
    2: any obstruction that impedes or is burdensome [syn:
       hindrance, hinderance, hitch, preventive,
       preventative, encumbrance, incumbrance, interference]
    3: the act of hindering or obstructing or impeding [syn:
       hindrance, hinderance, interference]

Moby Thesaurus II by Grady Ward, 1.0:

83 Moby Thesaurus words for "hindrance":
   afterthought, arrest, arrestation, barrier, bind, block, blockage,
   bureaucratic delay, check, clog, constraint, control, cooling,
   cooling down, cooling off, cumbrance, curb, curtailment,
   deceleration, delay, delayage, delayed reaction, detention,
   deterrent, double take, dragging, drawback, encumbrance, halt,
   hang-up, hitch, holdup, impedance, impediment, inhibition,
   injunction, interdict, interim, jam, lag, lagging, legal restraint,
   limitation, logjam, monopoly, moratorium, obstacle, obstruction,
   paperasserie, pause, prevention, prohibition, protection,
   protectionism, protective tariff, rationing, red tape, red-tapeism,
   red-tapery, rein, reprieve, respite, restraint, restraint of trade,
   retardance, retardation, retrenchment, self-control, slow-up,
   slowdown, slowing down, slowness, snag, stay, stay of execution,
   stop, stoppage, suspension, tariff wall, thought control, tie-up,
   time lag, wait