Eighthly adv. : As the eighth in order.

Example:


Taxonomy
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Defination from the web:
Eighthly in the Online Dictionary. Meaning of Eighthly. Pronunciation of Eighthly. Translations of Eighthly. Eighthly synonyms, Eighthly antonyms. ... Eighthly, a tooth of a Pachydermatous animal, probably the same with the Macrauchenia, a huge beast with a long neck ...