Use the verb stanch to describe stopping a liquid from spreading. A bandage can stanch bleeding and thick towels can stanch the flow of water across the kitchen floor when you drop a full glass of water.
The vowel sound in stanch most frequently sounds like on: "stonch." Stanch can also be pronounced to rhyme with branch. Though it's a verb mostly commonly associated with keeping blood from flowing from a wound, the origin is likely the Latin word stagnum, meaning "pond, pool." This word is related to stagnate, describing water that has no movement.