Webster’s Revised Unabridged Dictionary · 1913
Outcrop
Out′crop′ (·krŏp′), n. (Geol.) (a) The coming out of a stratum to the surface of the ground. Lyell. (b) That part of inclined strata which appears at the surface; basset.
Out·crop′ (·krŏp′), v. i. (Geol.) To come out to the surface of the ground; — said of strata.