1. Of or relating to or shaped like an octagon
   - octagonal

See also: octagon

• old style
• Old Style calendar
• old style font
• Old Testament
• old times
• old witch grass
• old wives' tale
• old woman
• Old World beaver
• Old World buffalo
• Old World chat
• Old World coot
• Old World coral snake
• Old World crayfish
• Old World flycatcher
• Old World hop hornbeam
• Old World jay
• Old World least weasel
• Old World leishmaniasis
• Old World mistletoe
• Old World monkey
• Old World oriole
• Old World porcupine
• Old World quail
• Old World rabbit