What does building block mean?
building block
Plural: building blocks
Definition
A small solid block that children stack to build towers and houses.
Example sentences
Careful, I just stacked all the building blocks into a tower!
Careful, I just stacked all the building blocks into a tower!
One building block always goes missing right when you need it for the roof.
One building block always goes missing right when you need it for the roof.
Ouch! Who left the building blocks all over the floor?