COLEWORT
kale, kail, cole, borecole, colewort, Brassica oleracea acephala
(noun) a hardy cabbage with coarse curly leaves that do not form a head
Source: WordNet® 3.1
Etymology
Noun
colewort (usually uncountable, plural coleworts)
A plant of the genus Brassica; now specifically, a Brassica plant without a head used for food, such as kale.
Synonyms
• (headless Brassica): cole
Source: Wiktionary
Cole"wort`, n. Etym: [AS. cawlwyrt; cawl cole + wyrt wort. Cf.
Collards.]
1. A variety of cabbage in which the leaves never form a compact
head.
2. Any white cabbage before the head has become firm.
Source: Webster’s Unabridged Dictionary 1913 Edition