The Collaborative International Dictionary
Surbedding
Surbed \Sur*bed"\, v. t. [imp. & p. p. Surbedded; p. pr. & vb. n. Surbedding.] [Pref. sur- + bed.] To set edgewise, as a stone; that is, to set it in a position different from that which it had in the quarry.
It . . . has something of a grain parallel with the
horizon, and therefore should not be surbedded.
--Gilbert
White.
Wiktionary
surbedding
vb. (present participle of surbed English)