| Noun | 1. | pica - a linear unit (1/6 inch) used in printingin, inch - a unit of length equal to one twelfth of a foot point - a linear unit used to measure the size of type; approximately 1/72 inch en, nut - half the width of an em | |
| 2. | Pica - magpiesmagpie - long-tailed black-and-white bird that utters a chattering call | |
| 3. | pica - eating earth or clay or chalk; occurs in some primitive tribes or sometimes in cases of nutritional deficiency | |