A welcome mat is the small rough carpet at the front door where you clean your shoes. Wipe your feet on the welcome mat.
The rough surface is the point, since a smooth one does nothing at all. Putting out the welcome mat also means making somebody feel expected.
1phrasewelcome matThe small rough carpet at the front door where you clean your shoes.
“The key was under the welcome mat, as it always is.”
welcome mat is a mat.
Also accepted in games: doormat
Practised in Around the House