Definition of long pepper
1a : the fruit of an eastern Asiatic pepper (Piper longum) consisting of elongated spikes that are ground to produce a condiment somewhat sweeter and more aromatic but less pungent than common pepper b : any of several plants of the genus Piper (as the kava)
2a : a hot pepper (Capsicum frutescens longum) with extremely pungent slender elongated drooping red or yellow fruits that are the chief source of cayenne pepper b : the fruit of a long pepper
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