1. Highly significant or important especially bringing about or marking the beginning of a new development or era
   "epochal decisions made by Roosevelt and Churchill"
   - epoch-making

See also: epoch, important, significant

• barn dance
• barn grass
• barn millet
• barn owl
• barn spider
• barn swallow
• clews
• CLI
• clianthus
• Clianthus formosus
• Clianthus puniceus
• Clianthus speciosus
• Clichy
• Clichy-la-Garenne
• cliché
• clichéd
• click
• click beetle
• click off
• click open
• click-clack
• clickable
• clicker
• clickety-clack
• clickety-click