Kel'ter noun [ Confer Gael. & Ir. cealt clothes, Gael. cealltair spear, castle, cause, Prov. English kilter tool, instrument. Confer Kilt .] Regular order or proper condition. [ Written also kilter .] [ > Colloq.] « If the organs of prayer be out of kelter<... Found on http://www.encyclo.co.uk/webster/K/5