Definition of expansion shield
: a device for anchoring attachments to masonry or concrete surfaces consisting of a metal insert that is driven into a drilled hole and expanded tightly against the sides of the hole
Love words? Need even more definitions?Merriam-Webster unabridged
Words at Play
Ask the Editors
- On Contractions of Multiple Words
- A Look at Uncommon Onomatopoeia
- Is Singular 'They' a Better Choice?