Definition of "PIE"

PIE¹

/piː.aɪ.iː/

proper noun
1. (linguistics, anthropology, etc.) Initialism of Proto-Indo-European.
adjective
not comparable
1. (linguistics, anthropology, etc.) Initialism of Proto-Indo-European.

PIE²

/piː.aɪ.iː/

noun
plural PIEs
1. Initialism of public-interest entity.

PIE³

/piː.aɪ.iː/

proper noun
1. (Singapore, in road signs) Initialism of Pan Island Expressway.