Related to syphering: ciphering
tr.v. sy·phered, sy·pher·ing, sy·phers
To overlap and even (chamfered or beveled plank edges) so that they form a flush surface.
[Alteration of cipher, to chamfer away.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.