1. A pit; a gap; a void space.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• laung,
• lasgna,
• lasana,
• launc,
• lazona,
• launa,
• lacuer,
• launi,
• laceny,
• lazana,
• lagua,
• laguns,
• becuana,
• cacumnal,
• dacuma,
• lacna,
• lacun,
• laccuna,
• lacuuna,
• lacunna

• lagune,
• lausanne,
• laguna,
• Lakin,
• laocoon,
• Lauzon,
• Lacina,
• lagan,
• Lajuana.

The adjective form of the word "lacuna" is "lacunal".