Midfeather definitions

Midfeather

• (n.) A vertical water space in a fire box or combustion chamber. • (n.) A support for the center of a tunnel.
Found on http://thinkexist.com/dictionary/meaning/midfeather/

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Midfeather

Mid'feath`er noun 1. (Steam Boilers) A vertical water space in a fire box or combustion chamber. 2. (Mining) A support for the center of a tunnel.
Found on http://www.encyclo.co.uk/webster/M/64

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