Tombolo, a word derived from Italian, refers to a sandy or gravelly isthmus that connects an island to the mainland or to another island. Other words that can be used interchangeably with tombolo include spit, bar, shoal, sandy causeway, or sandbar. Spit and sandbar are perhaps the most commonly used synonyms because they accurately describe the land feature and are more widely known. Shoal, bar, and sandy causeway are less common but still appropriate synonyms. Tombolos are found in coastal areas around the world and play an important role in stabilizing beach environments and protecting local ecosystems.