F-back
n.— «The “F” stands for “full,” as in fullback, but like most words in football parlance, the term makes little sense. The F-back incorporates several different positions including fullback, tight end, running back and wide receiver.» —“F-Back To Rescue” by Kevin Lynch San Francisco Chronicle (California) Aug. 1, 2006. (source: Double-Tongued Dictionary)
Further reading
In 1916, a small-town newspaper in Pennsylvania printed a fanciful item about a local gathering with a guest list that included, among others, Miss Ella Vader, Mr. Ray Zor, and other punny names. This is part of a complete episode. Transcript of...
Names don’t always mean what you think they mean. Main Street in San Francisco is named for businessman Charles Main. Snowflake, Arizona, is named for Erastus Snow and William Jordan Flake. This is part of a complete episode. Transcript of...