building block
noun /ˈbɪldɪŋ blɒk/
/ˈbɪldɪŋ blɑːk/
- enlarge image[countable] a piece of wood or plastic used as a toy for children to build things withTopics Games and toysc1
- building blocks[plural] parts that are joined together in order to make a large thing exist
- Single words are the building blocks of language.