Source : Webster's Revised Unabridged Dictionary (1913)

Standstill \Stand"still`\, n.
   A standing without moving forward or backward; a stop; a
   state or rest.

Source : WordNet®

standstill
     n 1: a situation in which no progress can be made or no
          advancement is possible; "reached an impasse on the
          negotiations" [syn: {deadlock}, {dead end}, {impasse}, {stalemate}]
     2: an interruption of normal activity [syn: {stand}, {tie-up}]