Thistle/ˈθɪsl/ Definition 1 of 2Pro Tip 1/3Prickle Warning Used to describe plants with sharp points that can cause pain if touched. Wear gloves when you're near the thistle bushes. Pro Tip 2/3Purple Associations Often used to signify the typical color of thistle flowers, linking to natural beauty. She admired the vibrant purple thistles in bloom. Pro Tip 3/3Botanical Context Commonly mentioned in discussions about gardening, nature, and botany. The botanist explained the thistle's role in the ecosystem.