Stapler/ˈsteɪplər/ Definition 1 of 2Pro Tip 1/3Office Essential Staplers are common in office settings for organizing documents. Make sure to refill the stapler in the meeting room. Pro Tip 2/3Use with Caution Staplers have moving parts and sharp staples; handle them carefully. Don't play with the stapler; you could hurt yourself. Pro Tip 3/3Different Sizes Staplers come in various sizes for different amounts of paper. Use the heavy-duty stapler for your thick report.