Rod/rɑːd/ Definition 1 of 5Pro Tip 1/3Physical Object A 'rod' is often considered for practical functions, like supporting structures. The closet was reinforced with a wooden rod. Pro Tip 2/3Custom Size 'Rod' doesn't imply a specific length or thickness, it varies by context. Can you hand me that short, thin rod of bamboo? Pro Tip 3/3Common Usage 'Rod' is frequently used with materials and activities, like fishing or curtain rods. She drew the curtains using the long metal rod.