Pa·ni·ni (pä'nə-nē) Indian grammarian. His Ashtadhyayi, one of the first works of descriptive linguistics, presents grammatical rules for Sanskrit.
pa·ni·no (pə-nē'nō) n.
pl.pa·ni·ni (-nē) An Italian sandwich made usually with vegetables, cheese, and grilled or cured meat.
[Short for Italian panino (imbottito), stuffed bread, sandwich : panino, diminutive of pane, bread + imbottito, past participle of imbottire, to stuff.]