building-block system

noun
UK /ˈbɪl.dɪŋ blɒk ˈsɪs.təm/
US /ˈbɪl.dɪŋ blɑːk ˈsɪs.təm/

A building-block system is a set of toy blocks that fit together so you can build things.

My little brother got a new building-block system for his birthday and made a tall tower.


OTHER MEANINGS

2. A set of basic parts used to make many different things in a computer program.

The app was made with a building-block system of ready-made code pieces.

3. A group of simple ideas that together help you understand a bigger subject.

The teacher taught math as a building-block system, starting with easy steps.

4. A way of putting small parts together to make a larger structure.

The shelves use a building-block system, so you can add more parts later.