What is the meaning of the word "labour-saving"?

Definitions:

  1. Able to save time and effort. copy to clipboard ADJECTIVE
    • The labour-saving tool was designed to minimize physical effort and maximize productivity. copy to clipboard
  2. Designed to replace or conserve human and especially manual labor. copy to clipboard ADJECTIVE
    • Farmers benefit from labour-saving technology such as automated irrigation systems. copy to clipboard
  3. Refers to anything that reduces the amount of work or effort needed to accomplish a task. copy to clipboard ADJECTIVE
    • With modern labour-saving appliances, household tasks have become much easier. copy to clipboard

Synonyms: