This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. A ridge of sand formed in a river or along a shore by the action of waves or currents.

n. A ridge of sand caused by the action of waves along a shore.

n. a bar of sand

"Having -- but what they didn ` t know is they bumped into a kind of false sandbar, which is actually notorious in Amagansett."

bar   

sandbars    sandbank    sand-bar    aquifers    fortiori