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- Printing a unit of type size and line length equal to 12 points (about 1/6 inch or 4.2 mm)【印刷】12点活字（西文）印刷长度（约1/6英寸, 即4.2毫米）。
1.1
- mass noun a size of letter in typewriting, with 10 characters to the inch (about 3.9 to the centimetre)相当于12点活字的西文打字机字形（每英寸10个字符, 即每厘米约3.9个字符）。
词源
late 16th cent.: from Anglo-Latin pica （literally 'magpie'）, commonly identified with a 15th-cent. book of rules about Church feasts, but no edition of such a pica printed in 'pica' type is known.
mass noun
- Medicine a tendency or craving to eat substances other than normal food (such as clay, plaster, or ashes), occurring during childhood or pregnancy, or as a symptom of disease【医】异食癖, 食欲倒错。
词源
mid 16th cent.: modern Latin, from Latin, literally 'magpie', probably translating Greek kissa 'magpie', also 'false appetite'.