nipper

The word 'nipper' originates from the Middle English verb 'nippen', meaning to pinch or bite, which itself has probable Germanic roots. The addition of the agent suffix '-er' creates a noun denoting 'one who or that which nips'. This logical formation first described tools like pincers, which perform a pinching action. The term was then humorously and affectionately applied to young children, particularly boys, likely due to their perceived mischievous or biting behavior, or simply their small size in comparison to the larger 'nippers' (tools). The application to crustacean claws follows the same instrumental logic, describing the pinching appendage.

Structure: nip (to pinch/bite) + er (agent/instrument suffix) - nip: From Middle English 'nippen', of Germanic origin, meaning to pinch, bite, or squeeze sharply. It functions as the core verb root. - er: A native English suffix of Germanic origin used to form agent nouns (one who does something) or instrumental nouns (a thing that does something).