Every family, it seems, has its own set of words for describing
particular Lego pieces. No one uses the official names. “Dad, please
could you pass me that Brick 2×2?” No. In our house, it’ll always be:
“Dad, please could you pass me that four-er?”

And I’ll pass it, because I know exactly which piece he means. Lego nomenclature is essential for family Lego building.

“Dad, I’m building a roof for the medical pod, but I need a hinge-y bit
to make it open up. You know, one of those four-er flat hinge-y bits.” —Giles Turnbull, The Morning News