Definition of "seashell" [sea•shell]

• The calcareous shell of a marine mollusk or similar marine organism. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Anyway, next is some mini beads, also from ELC, in seashell designs (being handwork, those will probably go on tonight while I watch House and Tuesday's CSI)."
• "She could hear the faint sound that caves made — it was like holding a seashell to your ear, only in this case the seashell was a lot bigger, and she was standing inside — and, somewhere in the distance, Glory could hear the faint, definitive plashing of water."
• "But, however tempestuous this is within me, it comes out as the low voice of a curiously colored seashell, which is only for those ears that are bent with compassion to hear it."