Definition of "ef"

ef

/ˈɛf/

noun
plural efs
1. The name of the Latin-script letter F.
  Quotations
  I have drunk en-ee-cee-tee-ay-ar from the ef-ell-oh-doubleyou-ee-ar-ess in his gee-ay-ar-dee-ee-en many a time.
  2004, Will Rogers, The Stonking Steps, page 170
conjunction
1. (nonstandard) Pronunciation spelling of if, representing dialectal English.
  Quotations
  Captain Tom would have hired him to hunt down his own child, ef Rosebud hadn’t interfered.
  1882, James Jackson, Tom Terror, the Outlaw‎