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carrying a gun, often concealed
The off-duty policeman was packing.
gerundive form, by ellipsis from "to pack heat"
The insertion of gauze or other material into a body cavity or wound for therapeutic purposes.
The material so used; a pack.
Armed, esp with a pistol; carrying: The policeman was packed before he raided the building (packed 1980s+ Teenagers, packing 1990s+)
in mathematics, a type of problem in combinatorial geometry that involves placement of figures of a given size or shape within another given figure-with greatest economy or subject to some other restriction. The problem of placement of a given number of spheres within a given volume of space is an example of a packing problem.