Canavalia ensiformis wani nau'in tsiro ne na legumes wanda aka fi sani da Jack wake ko wake. Tsire-tsire ne na shekara-shekara mai saurin girma wanda na dangin Fabaceae ne kuma asalinsa ne a yankuna masu zafi na Tsakiya da Kudancin Amurka. Waken da wannan tsiron ya samar yana da girma da tsayi, kuma a wasu lokuta ana amfani da shi azaman amfanin gona a wasu al'adu. Baya ga amfani da shi a matsayin amfanin gona, Canavalia ensiformis kuma ana amfani da shi a aikin noma a matsayin amfanin gona mai rufewa, abinci, da taki.