thingy

Etymology

From thing + -y.

noun

1. (informal) A thing (used to refer to something vaguely or when one cannot recall its name).
2. (slang, euphemistic, childish) A penis.
   He pulled out his thingy. It was huge. 2004, Richard Tinsley, Walking on the Son

adj

1. Resembling or characteristic of a thing; tangible.
   The most unpleasant, and also the thingiest, the central thing in Foreign Parts, was a giant banyan tree, putting out more and more suckers which created tangled arches, a swollen hiding-place of a tree, a series of organic traps, […] 1985, A. S. Byatt, Still Life
   The secret of even the thingiest SF, the most solid-walnut-to-the-knuckles fantasy, is that you don't need much to summon worlds out of air, so long as the details are the right ones. 2017, Francis Spufford, True Stories: And Other Essays, page 128