Source : Webster's Revised Unabridged Dictionary (1913)

Cornered \Cor"nered\ (-n?rd), p. a.
   1 Having corners or angles.

   2. In a possition of great difficulty; brought to bay.

Corner \Cor"ner\, v. t. [imp. & p. p. {Cornered} (-n?rd); p. pr.
   & vb. n. {Cornering}.]
   1. To drive into a corner.

   2. To drive into a position of great difficulty or hopeless
      embarrassment; as, to corner a person in argument.

   3. To get command of (a stock, commodity, etc.), so as to be
      able to put one's own price on it; as, to corner the
      shares of a railroad stock; to corner petroleum.

Source : WordNet®

cornered
     adj : forced to turn and face attackers; "a stag at bay"; "she had
           me cornered between the porch and her car"; "like a
           trapped animal" [syn: {at bay(p)}, {trapped}, {treed}]