The ledger was named for its weight, not its contents — it was the big book that lay permanently on a desk, too heavy to carry, unlike the portable day-journal.
A book or electronic record in which financial accounts are kept; the principal book of accounts in a business.
From Middle English legger, originally meaning a large book that stays in one place (as opposed to smaller portable books), probably from leggen (to lay, to place) or from Dutch legger (something that lies in a place). The word originally described the physical nature of the book — one that lay permanently in a church or counting house — before specializing to mean an account book. Key roots: *legjaną (Proto-Germanic
The ledger was originally named not for its contents but for its size and permanence — it was the big book that lay in one place, too large to carry around. Medieval businesses kept smaller portable "journals" (day-books) for daily transactions, then transferred totals to the ledger, which stayed on its desk. The word blockchain technology calls its records "distributed ledgers," consciously