coistril

noun

1. (obsolete)An inferior groom or lad employed by an esquire to carry the knight's arms and other necessaries; a coistrel.
2. (obsolete)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.”

   “He's a coward and a coistril that will not / drink to my niece till his brains turn o'the toe like a / parish top.”