cultrate
/ˈkʌltrət/ /ˈkʌltreɪt/Botany and Zoology
adjective
Formed like the blade of a knife or ploughshare; especially curved with a pointed end, often with one flattened and one sharp edge, like a pruning knife.
Origin
Early 19th century; earliest use found in William Turton (1762–1835), conchologist. From classical Latin cultrātus shaped like a knife (Pliny) from cultr-, culter knife, share + -ātus.