straw cutter; short mane
Refers to a traditional tool for cutting straw, or to a horse's mane cut short. The 'short mane' sense is a specialized equestrian term.
In old farmhouses, they used a straw cutter to chop straw into small pieces.
That horse had its mane cut short, so its mane was short.
pressing and cutting
Describes the action or process of pressing down while cutting, often in industrial or craft contexts. Can also refer to a cutting method or a device that combines pressing and cutting.
This machine cuts metal sheets using a pressing-and-cutting method.
Variant without the し okurigana; less common but still encountered.
Compound of 押し (oshi, 'pushing') + 切り (kiri, 'cutting'). The meaning 'straw cutter' comes from the tool's action of pressing and cutting straw. The 'short mane' sense likely derives from the appearance of a mane cut straight across, as if by such a tool.