King James Bible
King James Version (KJV)

Probably feminine of a presumed derivative of the alternate of echo; properly, loitering (as a withholding of oneself from work) or leisure, i.e. (by implication) a "school" (as vacation from physical employment) -- school.
see GREEK echo
1. from Pindar down, freedom from labor, leisure.
2. according to later Greek usage, a place where there is leisure for anything, a school (cf. Liddell and Scott, under the word, III.; Winer's Grammar, 23): Acts 19:9 (Dionysius Halicarnassus, de jud. Isocrates 1; tie vi Dem. 44; often in Plutarch).