1. Small gadgets, tools, or mechanical parts, especially ones whose names are forgotten or unknown.
Usage: informal; chiefly British
2. Nonsense or rubbish; trivial or worthless matter.
Usage: informal; chiefly British

Examples

• The old radio was full of mysterious gubbins that I didn't recognize.
• He spent the afternoon tinkering with various electronic gubbins in his garage.
• I don't believe that gubbins about him being late—he's always on time.
• The drawer was cluttered with bits of gubbins left over from the renovation.
• She sorted through the gubbins in the toolbox looking for a wrench.
• Don't talk such gubbins; that story makes no sense at all.