PINNING
\pˈɪnɪŋ], \pˈɪnɪŋ], \p_ˈɪ_n_ɪ_ŋ]\
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a mutual promise of a couple not to date anyone else; on college campuses it was once signaled by the giving of a fraternity pin
By Princeton University
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Quinones
- Hydrocarbon rings which contain two moieties position. They can be substituted in any position except at the ketone groups.