[ oh-ver-stawr-ee, -stohr-ee ]
/ ˈoʊ vərˌstɔr i, -ˌstoʊr i /

noun, plural o·ver·sto·ries.

the uppermost layer of foliage in a forest, forming the canopy.

Origin of overstory

1480–90, for an earlier sense; 1955–60 for current sense; over- + story2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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