Glossary Terms for the Letter L View the Entire Glossary A  | B  | C  | D  | E  | F  | G  | H  | I  | J  | K  | L  | M  | P  | Q  | R  | S  | T  | U  | V  | W Lift Hook A metal device embedded into the cast stone for the purpose of lifting and/or anchoring. Line Item The basic part of a Bid/Estimate, the line items detail what is actually being estimated and how it is being done. Line Items are usually grouped into Product Groups or Areas for convenience, with subtotals shown. A line item may be a single piece of stone or a Unit consisting of many pieces of stone. Lintel A stone or other material spanning an opening and carrying the load of a wall above.