[tom-buh-loh] 
| a sand bar connecting an island to the mainland or to another island. |
| tom·bo·lo (tŏm'bə-lō') n. pl. tom·bo·los A sandbar that connects an island to the mainland or to another island. [Italian, from Latin tumulus, mound; see tumulus.] |
| tombolo (tŏm'bə-lō') Pronunciation Key
A sand or gravel bar that connects an island to the mainland or to another island. |
tombolo
one or more sandbars or spits that connect an island to the mainland. A single tombolo may connect a tied island to the mainland, as at Marblehead, Mass. A double tombolo encloses a lagoon that eventually fills with sediment; fine examples of these occur off the coast of Italy. The shallower waters that occur between an island and the mainland are the loci of such features because sandbars form there.
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bəˌloʊ