3 definitions
for Shale
From The Collaborative International Dictionary of English v.0.48 :
Shale \Shale\, v. t.
To take off the shell or coat of; to shell.
[1913 Webster]
Life, in its upper grades, was bursting its shell, or
was shaling off its husk. --I. Taylor.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48 :
Shale \Shale\, n. [AS. scealy, scalu. See Scalme, and cf.
Shell.]
1. A shell or husk; a cod or pod. "The green shales of a
bean." --Chapman.
[1913 Webster]
2. [G. shale.] (Geol.) A fine-grained sedimentary rock of a
thin, laminated, and often friable, structure.
[1913 Webster]
Bituminous shale. See under Bituminous.
[1913 Webster]
From WordNet (r) 2.0 :
shale
n : a sedimentary rock formed by the deposition of successive
layers of clay