jamb

jamb is defined in Webster's Unabridged Dictionary (1913) with 2 senses. The full text of each entry is reproduced verbatim below.

Definitions

  1. 1.(Mining) Any thick mass of rock which prevents miners from following the lode or vein.
  2. 2.See Jam, v. t.

Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).

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