Learn how to say Stapler correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word staple:
a piece of thin wire with two short right-angled end pieces which are driven by a stapler through sheets of paper to fasten them together.
a U-shaped metal bar with pointed ends for driving into wood to hold things such as wires in place.
[with object and adverbial of place]
attach or secure with a staple or staples:
Merrill stapled a batch of papers together
Old English stapol, of Germanic origin; related to Dutch stapel ‘pillar’ (a sense reflected in English in early use)