Meaning of interfinger

in•ter•fin•ger

Pronunciation: (in"tur-fing'gur), [key]
— v.i. Geol.
  1. (of sedimentary rocks) to change laterally from one type to another in a zone where the two types form interpenetrating wedges.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.