Filler/ˈfɪlər/ Definition 1 of 5Pro Tip 1/3Physical Repair Used for tangible items needing repair, not for fixing abstract concepts. I applied some filler to the broken vase. Pro Tip 2/3Visualize the Gap Imagine a physical hole or space being filled in a real object. The holes in the wood were covered with wood filler. Pro Tip 3/3Not a Solution Filler fixes appearances temporarily; it doesn't solve underlying problems. Using filler won't fix the door's weak hinge.