The Commens Dictionary
Quote from ‘Foundations of Mathematics [R]’
If a sign allows the utterer a certain latitude of choice as to what his meaning may be; so that he may perhaps defend its applicability in several ways […] then the sign may be said to be vague, or non-definite.
MS [R] 10:1-2
‘Vague’ (pub. 21.08.17-11:26). Quote in M. Bergman & S. Paavola (Eds.), The Commens Dictionary: Peirce's Terms in His Own Words. New Edition. Retrieved from http://www.commens.org/dictionary/entry/quote-foundations-mathematics-r-9.