wallwall /wɔːlwɒːl/ nounFINANCE1go to the wall if a business goes to the wall, it fails, especially because of financial difficultiesOne of the highest-flyers in the computer industry went to the wall a year ago because of trouble handling a large acquisition.
2hit a wall if sales, profits etc hit a wall, they reach their highest point before beginning to fallBooming car sales in Germany hit a wall in August, plummeting 40%.
→ see also Chinese wall, party wall