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A variety of summer squash (Cucurbita pepo) having large elongated greenish fruit.
(Plants) US and Canadian any of several oblong squashes that have a hard smooth rind, esp the vegetable marrow
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|Noun||1.||marrow squash - any of various squash plants grown for their elongated fruit with smooth dark green skin and whitish flesh|
Cucurbita pepo melopepo, summer squash, summer squash vine - any of various usually bushy plants producing fruit that is eaten while immature and before the rind or seeds harden