To make short or shorter the duration or extent of
We decided to curtail the event because people began to leave early.
On heavy soils, however, the farmer cannot afford to curtail the time necessary for thorough cultivation of the land.
Could you please curtail the texting and driving while I am a passenger in your car?
In general, however, the tendency has been, under continental influence, to curtail its proportions.
Let's try to curtail the time we spend indoors and enjoy the summer season.