a saw-toothed structure or a genus of large flying fish with saw-like teeth; in zoology, any structure with a serrated or jagged edge.
From Latin 'serra' meaning saw. The term is used in scientific naming to describe saw-like or jagged biological structures.
The word comes directly from Latin and appears everywhere in scientific names—swordfish are 'Xiphias' but sawfish are literally named for their saw-like snouts. Serra appears in hundreds of animal names because nature loves creating saw-toothed edges for cutting and defense.
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