coso
An Argentine idiom used to refer to an object or thing, especially when the speaker does not know its specific name or uses it as a placeholder. It is frequently used by customers in hardware stores when they are unable to name the specific spare part they need to buy.
Hardware store sign: 'Dear Customer: If you need the cosito of the coso, please bring us the coso where the cosito goes as a sample. Thank you very much.'
Automatically translated from Spanish