The word "thingie" is a slang term used to describe something when you don't remember or know its actual name. It's a way to refer to a thing without using its proper name. Full definition
Luther, Calvin, Joe Smith, Henry VIII, Wesley, Roger Williams, the Great «Babs» et al, founders of Christian - based religions or combination religions also suffered from the belief in / hallucinations of «pretty wingie thingie» visits and «prophecies» for profits analogous to the myths of Catholicism (resurrections, apparitions, ascensions and immaculate conceptions). (nakedpastor.com)
I bought this LOFT jacket thingie at my local consignment store because I still can't find a decent, inexpensive trench I like, and I need something other than (or, rather, in addition to) my field jacket to get me through spring. (bluecollarredlipstick.com)