at·tach 
/əˈtætʃ/ verb
at·tach·es; at·tached; at·tach·ing /əˈtætʃ/ verb 1 a [+ obj] : to fasten or join one thing to another
▪ I've attached an application to the brochure for you. ▪ She attached a note to the package. ▪ I attached the file to the e-mail. — often used as (be) attached ▪ A hook is attached to the back of the picture frame. — often used figuratively ▪ The man attached the blame to the two boys. [=said the two boys should be blamed] ▪ The lawyer attached [=added] new conditions to the contract. ▪ The shy child attached herself to her mother [=stayed close to her mother] during the whole party.
b [no obj] : to be or become joined or connected
▪ The handle attaches here on the top. — opposite detach 2 [+ obj] a : to associate or connect one thing with another — + to ▪ It's obvious in the way he dresses that he attaches great importance to appearance. [=he thinks appearance is very important] ▪ People attach different meanings to the poem. [=people understand the meaning of the poem in different ways] — often used as (be) attached ▪ Magical powers were once thought to be attached to the stone. [=the stone was once thought to have magical powers] ▪ Little credibility was attached to his story. [=people did not think that his story was very credible]
b : to associate or connect (yourself) with someone or something — + to ▪ He attached himself to an older, wealthy woman. ▪ She attached herself to the cause. — often used as (be) attached ▪ His doctor is attached to the clinic. [=his doctor is associated with the clinic]
▪ I've attached an application to the brochure for you. ▪ She attached a note to the package. ▪ I attached the file to the e-mail. — often used as (be) attached ▪ A hook is attached to the back of the picture frame. — often used figuratively ▪ The man attached the blame to the two boys. [=said the two boys should be blamed] ▪ The lawyer attached [=added] new conditions to the contract. ▪ The shy child attached herself to her mother [=stayed close to her mother] during the whole party.
b [no obj] : to be or become joined or connected
▪ The handle attaches here on the top. — opposite detach
b : to associate or connect (yourself) with someone or something — + to ▪ He attached himself to an older, wealthy woman. ▪ She attached herself to the cause. — often used as (be) attached ▪ His doctor is attached to the clinic. [=his doctor is associated with the clinic]
