From The Collaborative International Dictionary of English v.0.48 [gcide]: Pi \Pi\, v. t. [imp. & p. p. Pied; p. pr. & vb. n. Pieing.] (Print.) To put into a mixed and disordered condition, as type; to mix and disarrange the type of; as, to pi a form. [Written also pie.] [1913 Webster]