(chemistry) Any of several anions containing a central nickel atom bonded to oxygen or oxygen-containing groups; any salt containing these anions

Alternative spelling of nickel-rich

(of an ore, alloy, or metal object) Rich in nickel: having a high proportion of nickel content.

Alternative form of not worth a plug nickel

Alternative form of plug nickel

(chiefly US, colloquial) A nearly worthless amount.

(chiefly US, idiomatic) Having no or almost no value; worthless.

(of ore) Yielding or containing nickel.

plural of nickelate

plural of nickelocene