This ans., e.g

• Shortened word, briefly
• Shortened version, for short
• L.A., but not Chicago
• Mr. or misc., e.g
• Self-descriptive letters
• 47 Down is one
• Truncated form of a wd
• Ex., for example
• Lb. or oz., e.g

Wiktionary Word definitions in Wiktionary
n. (alternative spelling of abbr. dot= English).