Definition of sac
- a synovial sac
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sac.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
: a part inside the body of an animal or plant that is shaped like a bag and that usually contains liquid or air
What made you want to look up sac? Please tell us where you read or heard it (including the quote, if possible).
to emit the high shrill tone of bagpipes
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