The term INSTALLED, AS BRICKS can be broken down into two crossword solutions: TREE and LAID. TREE is a four-letter word that refers to a woody perennial plant typically having a single stem or trunk growing to a considerable height and bearing lateral branches at some distance from the ground. LAID is also a four-letter word that means to put something down gently or carefully. Therefore, the phrase INSTALLED, AS BRICKS can be interpreted as installing bricks in the same manner as one would lay down trees.