👉 In medicine, a caulicle is a small, round space between two main vessels that drain blood from a limb. It's often associated with the heart and can be found in the neck, chest, or abdomen. The name "caulk" comes from the French word for "wood," as it was used to seal cracks and holes in wood furniture. In anatomy, a caulk is an elastic band that holds the skin together and prevents it from moving out of place due to friction or