A small or young groom; a diminutive form suggesting a junior or apprentice groom in a stable.
From groom plus the diminutive suffix -let, which means 'small' or 'little'—the same suffix in booklet, bracelet, and droplet.
English's diminutive suffix -let is delightful but often creates words nobody actually uses—'groomlet' is technically valid but you'd just say 'young groom' instead.
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