jack o'lantern

listen to the pronunciation of jack o'lantern
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Alternative spelling of jack-o'-lantern

We helped the children carve pumpkins into Jack O'Lanterns.

A vegetable, usually a pumpkin, but alternatively a turnip, carved into the form of a face and lighted within by a candle. Associated chiefly with the holiday Halloween
a strange light that attracts travellers from the paths into dangerous marshes or graveyards, possibly caused by methane, now rarely seen. (See Wikipedia for other explanations)
jack o'lanterns
plural form of jack o'lantern