nickelback
nickelback — 名詞
1. a defensive player in American football who joins the four usual defensive backs
五分衛
美式足球中第五名防守後衛
a defensive player in American football who joins the four usual defensive backs when a team chooses to use an extra player to cover the pass — the formation is called the nickel defence because five defensive backs are on the field, like a five-cent coin has the value of five cents.
The Seahawks used a nickelback to cover the opponent's third wide receiver on a pass play.
海鷹隊派出五分衛，在傳球進攻中盯住對方的第三號外接手。
nickelback used against extra wide receiver
Ravi practised as a nickelback all week because the opponent often threw on third down.
Ravi 整週都在練習五分衛的位置，因為對手經常在第三次進攻時傳球。
The coach told the nickelback to cover the slot receiver on the short middle route.
教練告訴五分衛要盯住槽接球員，在中路短距離路線上防守。
College cornerbacks often earn a nickelback spot in the NFL for more playing time on passing downs.
大學角衛常爭取在 NFL 擔任五分衛，以求在傳球進攻距離中獲得更多上場時間。
- fifth defensive back
descriptive phrase rather than a fixed term; used in coaching discussions
- nickel corner
informal alternative; emphasises that the player is usually a cornerback
- slot corner
related term focusing on the area of the field covered rather than the formation
用法筆記
The nickelback is not a separate position in the standard defence — it is usually an extra cornerback who replaces a linebacker when the team expects a pass play. The name comes from the nickel formation (five defensive backs), which was named after the five-cent US coin.