[f. FOSTER sb.1 Cf. ON. fóstrsonr.] One who is brought up as a son though not one by birth.
a. 1450. Le Morte Arth., 2955. That fals traytor, sr Mordreid, The Kynges foster sone [Furniv., soster son] he was.
1697. Dryden, Virg. Pastorals, IV. 66.
Mature in Years, to ready Honours move, | |
O of Cœlestial Seed! O foster Son of Jove! |
1894. J. T. Fowler, Adamnan, Introduction, p. lxxxii. He was called the foster-son or alumnus of Adamnan.