Noun
pastie (plural pasties)
An item worn (often by strippers) to conceal one's nipples.
A type of seasoned meat pie, usually of a semicircular or distinctive shape.
(Northern Ireland) A circular, battered and deep-fried meat pie usually consisting of minced pork, onion, potato and seasoning and served in a bap or with chips. A peculiarity of Northern Irish "chippy" cuisine, rarely (if ever) seen outside the area.
Source: en.wiktionary.org