caster
UK[ˈkɑːstə]US[ˈkæstər]
n
A small wheel, typically one of a set, swiveling beneath a piece of furniture or machinery to allow it to be moved easily.
n
A person or machine that casts something, especially metal or fishing lines.
n
A container with a perforated top for sprinkling sugar, salt, or other powdered substances.
Morpheme Breakdown
cast
er
cast
er
Etymology
The word 'caster' is a straightforward agent noun formation from the verb 'cast', which entered Middle English from Old Norse 'kasta', meaning to throw. The suffix '-er', of Germanic origin, is one of the most productive in English for creating nouns denoting an agent or instrument. The semantic evolution follows a clear path: from a person who throws or shapes metal (a founder) to a machine that performs this action, and then, by metaphorical extension, to objects that facilitate movement (wheels that "throw" or propel an object) or containers designed to "throw" or scatter contents. The logic connects the core idea of propelling or shaping to the modern specialized tools and devices.
Analysis
Structure: cast + er
cast (from Old Norse 'kasta', meaning to throw) + er (from Old English '-ere', an agent noun suffix indicating a person or thing that performs an action).
Examples
The heavy cabinet was fitted with smooth-gliding casters for easy relocation.
He worked as a metal caster in the local foundry for over twenty years.
She reached for the sugar caster to dust the top of the freshly baked cake.