| -nik | |
| —suffix forming nouns | |
| denoting a person associated with a specified state, belief, or quality: beatnik; refusenik | |
| [C20: from Russian -nik, as in | |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |