Idioms & Expressions
What is an idiom
An idiom is an expression whose meaning cannot be)
predicted from the usual meaning of its constituent elements.)
(Webster Dictionary)
An idiom can have a literal meaning but its alternate figurative meaning have to be understood metaphorically.
(T.C.Cooper)
Some examples are provided
You cant have your cake and eat it too.
اصطلاح : نمیشه هم خدارو بخوای هم خرما رو.
No pain, No gain.
اصطلاح.: نابرده رنج گنج میسر نمیشود. 
Love is blind.
اصطلاح: عشق آدمو کور میکنه.
You screwed up.
اصطلاح: گند زدی.
Can you cover me?
اصطلاح : میتونی هوامو داشته باشی؟