Source : Webster's Revised Unabridged Dictionary (1913)

Agnail \Ag"nail\, n. [AS. angn[ae]gl; ange vexation, trouble +
   n[ae]gel nail. Cf. {Hangnail}.]
   1. A corn on the toe or foot. [Obs.]

   2. An inflammation or sore under or around the nail; also, a
      hangnail.

Source : WordNet®

agnail
     n : a loose narrow strip of skin near the base of a fingernail;
         tearing it produces a painful sore that is easily
         infected [syn: {hangnail}]