Origins
The word 'bank' — perhaps the most important noun in modern capitalism — began its life as a humble piece of furniture. It descends from Italian 'banca,' meaning 'bench' or 'counter,' which the Italians had borrowed from the Lombard (Germanic) word *banka, from Proto-Germanic *bankiz (bench). The same Proto-Germanic root produced Old English 'benc,' which became Modern English 'bench.' So 'bank' and 'bench' are doublets — the same word that entered English twice, once through its native Germanic inheritance and once through Italian.
The transformation from furniture to finance occurred in the commercial cities of northern Italy — Florence, Venice, Genoa, and Siena — during the twelfth and thirteenth centuries. Money-changers, who exchanged currencies from different Italian city-states and foreign countries, conducted their business at wooden benches ('banche') set up in public marketplaces and piazzas. The bench was both workspace and identity: a money-changer was known by his bench, and the bench served as a public guarantee that he was established, licensed, and trustworthy.
When a money-changer became insolvent — when he could no longer honor his obligations — his bench was ceremonially destroyed. The Italian expression for this was 'banca rotta' (broken bench), which entered English as 'bankrupt' and French as 'banqueroute.' The ritual destruction of the bench was a public shaming: it announced to the marketplace that this person was no longer creditworthy and could no longer trade. The legal and metaphorical use of 'bankrupt' (financially ruined, exhausted of resources) descends directly from this physical act of destruction.
Development
As Italian banking houses grew from marketplace benches into sophisticated financial institutions — the Medici Bank was founded in 1397 — the word 'banca' grew with them, shifting from 'a bench where money is changed' to 'an institution that manages money.' The word spread across Europe with Italian banking practices: French 'banque,' Spanish 'banco,' German 'Bank,' and English 'bank.'
The English word 'bank' first appears around 1474, initially referring to the money-changer's table and quickly expanding to mean the financial institution itself. By the sixteenth century, it had fully displaced older English terms for moneylending.
Another relative is 'banquet,' which came to English from Italian 'banchetto' (a little bench), through French 'banquet.' The original 'banchetto' was a small table at which refreshments were served between the main courses of a meal. The word later expanded to mean the feast itself rather than the table.
Legacy
The irony of the word 'bank' is that it preserves the memory of a transaction method — face-to-face exchange across a physical counter — that modern banking has almost entirely eliminated. Digital transfers, ATMs, and online banking have made the 'bench' obsolete, yet the word endures, a linguistic fossil from the medieval Italian marketplace.