Chimaek is actually made up of two words, namely: Chicken/Chicken, in this case Fried Chicken/Fried Chicken, and Maekju/Maekju/Beer, which is Korean pinyin similar to our pinyin.

Take the first three letters of Chicken, add the first four letters of Maekju, and together they become Chimaek.

Pronunciation is similar to the Chinese pronunciation: chi mak

This is a popular way of pairing food and drink nowadays.

This English way of writing is also the most popular, similar to our Internet slang.

Of course the direct translation is Fried chicken and Beer