sea shell

A child collects a colorful sea shell on the beach.

Definition

Noun: - The sea shell is the hard, protective outer covering of a marine mollusk, such as a clam, oyster, or snail. It is typically found on beaches or in the ocean.

Usage Examples

• (The children gathered the outer coverings of marine mollusks from the beach.)
• (She employed the hard outer covering of a marine mollusk for decoration.)
• (The protective covering of a marine mollusk had a complex and beautiful pattern.)

Advanced Usage

• "To hear the ocean in a sea shell": A common belief that holding a large sea shell to your ear mimics the sound of the ocean.

  • He held the sea shell to his ear and claimed he could hear the waves. (He used the hard outer covering of a marine mollusk to listen to a sound resembling the ocean.)

• "A sea shell necklace": A piece of jewelry made by stringing small sea shells together.

  • She wore a sea shell necklace as a souvenir from her beach vacation. (She adorned herself with a necklace made from the protective coverings of marine mollusks.)

Variants and Related Words

• Seashell (n): A single-word variant of "sea shell," meaning the same thing.
  • The seashell was perfectly intact. (The hard outer covering of a marine mollusk was undamaged.)
• Shellfish (n): A broader term for aquatic animals with a shell, including sea shells and crustaceans.
  • Lobsters and clams are common types of shellfish. (These animals have hard outer coverings like those of sea shells.)

Synonyms

• Crustacean shell: The hard covering of a marine animal like a crab or lobster, though distinct from mollusk shells.
• Mollusk shell: A more technical term for the protective covering of a mollusk, which is the same as a sea shell.

Related Idioms

• "To come out of one's shell": To become more sociable or less shy, unrelated to sea shells but using the word "shell."
  • After the party, he finally came out of his shell and started talking. (He became more open and less reserved.)
• "A shell of a person": Someone who is emotionally empty or withdrawn, using "shell" metaphorically.
  • After the loss, she was just a shell of her former self. (She appeared hollow and lacking vitality.)