Definition of "underpinning" in Englisch

verb

1. present participle and gerund of underpin

noun

1. A support or foundation, especially as a structure of masonry that supports a wall.

   • This house's underpinning is not up to standard.

2. (figurative) A basis for something.

   • I would like to know more about the underpinning of this political theory.

3. (figurative, humorous) The lower body or legs.