coistril means an inferior groom or lad employed by an esquire to carry the knight's arms and other necessaries; a coistrel. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
noun
- An inferior groom or lad employed by an esquire to carry the knight's arms and other necessaries; a coistrel.
- A mean, paltry fellow; a coward.“And he shall 'by his merriment as dear / As ever coistril bought so little sport: / Ne'er let this sword assist me when I need, / But rust and canker after I have sworn.”