Punc*til"io (pŭ?k*tĭl"y?), n.; pl. Punctilios (- yōz). [It. puntiglio, or Sp. puntillo, dim. fr. L. punctum point. See Point, n.] A nice point of exactness in conduct, ceremony, or proceeding; particularity or exactness in forms; as, the punctilios of a public ceremony.

They will not part with the least punctilio in their opinions and practices.