doobrie, n. — Green’s Dictionary of Slang

doobrie n.

also dooberry, doobry, dubry

[orig. in the army, the term gained a new lease of life thanks to the DJ and TV performer Kenny Everett, who used it frequently in the 1970s–80s]

(orig. milit.) anything for which one cannot recall the name.

1972		Mother Grumble issue 7 July 🌐 The river meandered and made all manner of oxbone dooberries.
1984		Partridge DSUE (8th edn) 330/2: army; 1950s.
2004		Computer and Video Games 🌐 There are loads of weapons and specialised dooberries to stick on your utility belt.