Definition of seashell
: the shell of a marine animal and especially a mollusk
Recent Examples of seashell from the Web
The wind was blowing strongly on February 17 when Brigitte Barthélémy saw the bottle poking out from a pile of seashells.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'seashell'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Before 12th Century
First Known Use of seashell
before 12th century
SEASHELL Defined for English Language Learners
Definition of seashell for English Language Learners
: the hard, empty shell of a small sea creature (such as a clam)
SEASHELL Defined for Kids
Definition of seashell for Students
: the shell of a sea animal
Seen and Heard
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