To make something shorter in length, duration, or extent. The editor decided to shorten the article to fit the space available in the magazine.
To reduce the number of words in a text or speech. She had to shorten her speech to fit the time limit for the presentation.
To make a garment or piece of clothing shorter in length. He asked the tailor to shorten the sleeves of his jacket.
To become shorter in length, duration, or extent. The days shorten as winter approaches.
To render (dough or pastry) crumbly or 'short' by working in fat or shortening. Shorten the dough with a little lard for a tender pie crust.