inwall

[verb in-wawl; noun in-wawl]

verb (used with object)

to enclose with a wall.

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noun

an inner wall.
Metallurgy. an inwardly sloping wall above the bosh of a blast furnace.

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Origin of inwall

First recorded in 1605–15; in-¹ + wall

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018