Shortened wd

• R.B.I. or E.R.A., e.g.
• 39-Down, e.g.
• Mass. or Miss
• Lb. or oz., e.g
• Short, for short
• Etc. or WSW
• Lb. or oz., e.g.
• L.A., but not Chicago
• A.M. or P.M., e.g

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