Fiber
Definition · Level 6 · Desk language
Keep reading with Tradecraft
Without an account, you can read three definitions every 30 days. Tradecraft explains all 738 terms and strategies, with the lessons that teach them, flashcards that come back before you forget, quizzes and a payoff lab.
Nickname for EUR/USD, the most traded currency pair in BIS surveys — heard mostly in retail and online commentary; bank desks usually just say “euro”.
Example
“Mine, ten at 45” in EUR/USD = buy €10m at 1.0845 (big figure 1.08).
Rules and market figures change: check the current ones before relying on this (written as of 2026-09).
Where Tradecraft teaches it
Level 6 · Desk language, in the lesson “Size and currency slang”: Bucks, yards, lots and the FX nicknames — plus what one pip is worth.
Related terms
- A buckFX, rates and bond-desk slang for one million (dollars or units of the currency traded).
- A yardOne billion, from the French “milliard” — used mainly in FX and rates so nobody confuses billion and million on a noisy line.
- AussieNickname for the Australian dollar and the AUD/USD pair.
- CableNickname for GBP/USD, after the transatlantic telegraph line that once carried the rate.
- KiwiNickname for the New Zealand dollar and the NZD/USD pair.
- LoonieNickname for the Canadian dollar, after the bird on Canada’s one-dollar coin; used loosely for USD/CAD, which desks also call “dollar-CAD” or “funds”.