Definition of staple verb from the Oxford Advanced American Dictionary

 

staple

 verb
verb
NAmE//ˈsteɪpl//
 
staple something + adv./prep.Verb Forms present simple I / you / we / they staple
 
he / she / it staples
 
past simple stapled
 
-ing form stapling
 
 
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to attach one thing to another using a staple or staples Staple the invoice to the receipt. Staple the invoice and the receipt together.
See the Oxford Advanced Learner's Dictionary entry: staple