welcome mat
A friendly welcome, as in They put out the welcome mat for all new members. This expression alludes to a doormat with the word "Welcome" printed on it. [Mid-1900]
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |