This word is not acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. A metasyntactic term used for any object whose actual name the speaker does not know or cannot remember.

"“Yeah, she went to the doctor and had a whaddayacallit, a mammogram, and they told her she has cancer.”"

thingy