Source : Webster's Revised Unabridged Dictionary (1913)

Kelter \Kel"ter\, n. [Cf. Gael. & Ir. cealt clothes, Gael.
   cealltair spear, castle, cause, Prov. E. kilter tool,
   instrument. Cf. {Kilt}.]
   Regular order or proper condition. [Written also {kilter}.]
   [>Colloq.]

         If the organs of prayer be out of kelter or out of
         tune, how can we pray?                   --Barrow.

Source : WordNet®

kelter
     n : in working order; "out of kilter"; "in good kilter" [syn: {kilter}]