Tæppian

According to the Old English Dictionary:

tæppian

p. ode To tap, put a tap into a cask :-- Gyf ðé gedrýrptes wínes lyste, ðonne dó ðú mid ðínum swýþran scytefingre on ðíne wynstran hand, swylce ðú tæppian wille, and wænd ðínne scytefinger ádúne and twængc hine mid ðínum twám fingrum, swylce ðú of sumne dropan strícan wylle, Techm. ii. 125, 18. [Icel. tappa: Ger. zapfen.] tæppian