From the second edition (1989):
(ˈpɛdəgɒdʒɪ, -gəʊdʒɪ, -gɒgɪ) Also 6–7 peda-, pædagogie, 7– pædagogy. [a. F. pédagogie (Calvin 16th c.), ad. Gr. παιδαγωγία office of a παιδαγωγός: see pedagogue. So mod.Ger. pädagogie.]

1. The function, profession, or practice of a pedagogue; the work or occupation of teaching; the art or science of teaching, pedagogics.

1623 Cockeram 11, Skoole-masters-ship, pedagogie. 1659 Heylin Certamen Epist. 334 Prince Charles‥was committed to the Pedagogy of M. Thomas Murrey, a Scot by Nation. 1691 Wood Ath. Oxon. I. 219 He continued, notwithstanding in his beloved Faculty of Pedagogy. 1858 Bushnell Nat. & Supernat. xii. (1864) 379 With disquisitions, theories, philosophies, pedagogies, schemes of reformation. 1900 G. C. Brodrick Mem. & Impr. 12 An excellent old-fashioned teacher blissfully ignorant of ‘pædagogy’.

2. fig. Instruction, discipline, training; a means or system of introductory training. (In 17th c. frequently used of the ancient Jewish dispensation, in reference to Gal. iii. 24: cf. pedagogue 1b.)

1583 Stubbes Anat. Abus. i. (1879) 37 He would that this their meane and base attyre should be as a rule, or pedagogie, vnto vs. 1614 Raleigh Hist. World ii. iv. §5 The law of Moses‥was‥ordained to last untill the time of the Pædagogie of Gods people, or introduction to Christ, should be expired. a1703 Burkitt On N.T., Acts x. 2 Proselytes of the covenant, that is, such Gentiles as submitted them~selves to‥the whole Mosaical pædagogy.

3. A place of instruction; a school or college. (Also fig.) Obs. exc. Hist.

c1625 Donne Serm. Ps. xxxii. 1, 2 S. Paul was in a higher Pedagogy, and another manner of University‥caught up into the third Heavens,‥and there he learnt much. 1783 W. F. Martyn Geog. Mag. II. 151 An incredible number of colleges, gymnasia, pedagogies. 1895 H. Rashdall Univ. Eur. Mid. Ages II. ii. 609 The poorest students could not afford the cost of residence in a Pædagogy. Ibid. 611 The Proctors should go to the Colleges or Pædagogies of the offenders.