I am not sure if this word has multiple meanings, but I am using it in an architectural context. Classical orders have distinctive columns with distinctive capitals. However, when I say each style also has a distinctive entablature, I am guessing many readers won't know what what the word entablature means (I didn't). So next to the word 'entablature', I would like to put in parentheses a synonym or very short phrase that defines the word 'entablature'.
Essentially, my question boils down to: What is a synonym or very-short phrase for the word 'entablature'?