Source : Webster's Revised Unabridged Dictionary (1913)

Atones \At*ones\, adv. [See {At one}.] [Obs.]

         Down he fell atones as a stone.          --Chaucer.
Atonic \A*ton"ic\, a. [Cf. F. atonique. See {Atony}.]
   1. (Med.) Characterized by atony, or want of vital energy;
      as, an atonic disease.

   2. (Gram.) Unaccented; as, an atonic syllable.

   3. Destitute of tone vocality; surd. --Rush.