• WordNet 3.6
    • n cushaw globose or ovoid squash with striped grey and green warty rind
    • n cushaw plant bearing squash having globose to ovoid fruit with variously striped grey and green and white warty rinds
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Century Dictionary and Cyclopedia
    • n cushaw A fruit, mostly oblong or crooked, of Cucurbita moschata, sometimes called squash and sometimes pumpkin. The pumpkins, as the term is understood in North America, belong to the species Cucurbita Pepo, and the autumn and winter squashes to C. moschata. The name seems to be applied somewhat loosely, and in its local usage may designate pumpkin-like fruits other than those of Cucurbita moschata; but the usage of horticultural writings seems to confine it to that species, although it dues not follow that all fruits of C. moschata are cushaws. The winter crookneck or Canada crookneck type is the fruit most commonly known as cushaw or cashaw. It keeps well into winter. The name is chiefly used in the southern and western United States.
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In literature:

First we'd gather peas and cushaws and pumpkins out the corn field, then get the corn and pile it front the cribs.
"Slave Narratives: a Folk History of Slavery in the United States From Interviews with Former Slaves" by Work Projects Administration
Their cushaws are a kind of pompion, of a bluish green color, streaked with white, when they are fit for use.
"The History of Virginia, in Four Parts" by Robert Beverley