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dorsum
Dortmund
dory (1)
dory (2)
DOS
dos-à-dos
dosa
dosage
dosai
dose
dosemeter
dosh
dosimeter
doss
dossal
dosser
dosshouse
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dorsal fin
dor·sal fin (plural dor·sal fins)


noun 
Definition:
 
fin on back: a single fin on the back of a fish or other water animal such as a dolphin that gives it stability while swimming.
See also  ventral fin
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