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chimney

chimney /ˈtʃɪmni/ noun
plural chimneys
chimney
/ˈtʃɪmni/
noun
plural chimneys
Britannica Dictionary definition of CHIMNEY
[count]
: a part of a building through which smoke rises into the outside air
especially : the part that sticks up above the roof see picture at house; see also smoke like a chimney at 2smoke
: a tall narrow opening through a large piece of rock (such as a cliff) that can be used for climbing the rock