Answer: whoosis

AnswerCrossword Clue
WHOOSISUnidentified one
WHOOSISForgotten one
WHOOSISThingamabob
whoosisan object or person whose name is not known or cannot be recalled.
whoosisan unnamed person or object, also WHOSIS
whoosisperson or thing considered typical or illustrative
whoosisobject or person whose name is not known or cannot be recalled