The Collaborative International Dictionary
coistrel
Coistril \Cois"tril\, n. [Prob. from OF. coustillier groom or lad. Cf. Custrel.]
An inferior groom or lad employed by an esquire to carry the knight's arms and other necessaries. [Written also coistrel.]
A mean, paltry fellow; a coward. [Obs.]
--Shak.
Wiktionary
coistrel
n. (alternative form of custrel English)
Usage examples of "coistrel".
He was himself a lord of language and had made himself a coistrel gentleman and he had written Romeo and Juliet.