J.F.K. or L.B.J.: Abbr

• Openings for Tolkien and Rowling?: Abbr
• OK components
• The J. and K. in J. K. Rowling: Abbr.
• Monogram ltrs
• Signature parts, often (abbr.)
• Document certifiers, for short
• A., B. and others: Abbr.
• JFK and LBJ, e.g
• Some signatures, briefly

Wiktionary Word definitions in Wiktionary
vb. (en-third-person singular of: init )