Source: Animal Farm, George Orwell, page 75

Context: “On some suitable pretext Whymper was led through the store-shed and allowed to catch a glimpse of the bins.”

In their words: https://www.merriam-webster.com/

a purpose or motive alleged or an appearance assumed in order to cloak the real intention or state of affairs

In my words: giving a motive that is different from your real intentions

In picture: