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Pecos
Pécs
pectate
pectic acid
pectin
pectinesterase
pectize
pectoral
pectoral fin
pectoral girdle
pectoral muscle
peculate
peculiar
peculiarity
peculium
pecuniary
pecuniary advantage
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pectoral fin
pec·to·ral fin (plural pec·to·ral fins)


noun 
Definition:
 
fin near gills: either of a pair of fins of a fish located either directly behind the gill openings or below them
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