Tín-wintre

According to the Old English Dictionary:

tín-wintre

adj. Ten years old :-- .x. wintre cniht mæg bión þiéfðe gewita a ten year old boy can be accessory to a theft, L. In. 7; Th. i. 106, 18. Ðá ða hé týnwintre on ylde wæs, Homl. Th. ii. 498, 28. tin-wintre