1. a book or other collection of financial accounts of a particular type: "the total balance of the purchases ledger"
2. a flat stone slab covering a grave: "the ledger stone of William Averie"
3. a horizontal scaffolding pole, parallel to the face of the building.
Word Originlate Middle Englishlegger, ligger (denoting a large bible or breviary), probably from variants of lay1 and lie1, influenced by Dutch legger and ligger. Current senses date from the 16th century, except the fishing senses, known from the 17th century.