Grasshopper

noun

1. A mostly herbivorous insect of the order Orthoptera, noted for its ability to jump long distances and for the habit of some species communicating by stridulation; they are related to but distinct from crickets.
2. A cocktail made with crème de menthe and optionally with crème de cacao.
3. A young student in initial stages of training who has been chosen on account of their obvious talent.
4. In ordinary square or upright pianos of London make, the escapement lever or jack, so made that it can be taken out and replaced with the key.