(a) hızla çarpmak, toslamak. The car ran up against a tree. (b) tesadüfen karşılaşmak, rastgelmek.
I ran up against old Bill in the market. (c) k.d. (belaya) çatmak, (zorlukla) karşılaşmak. I thought we would be successful, but we ran up against a lack of money.