A child who has outgrown the internal harness or height limitations of a forward-facing child safety seat. Within the range of 40 to 80 pounds but under 4â9â. Within 4 to 8 years of age and is at least 35â tall.
tread. v. trod (trÅd) or treaded, trodÂ·den (trÅdâ²n) or trod or treaded, treadÂ·ing, treads. v. tr. 1. To walk on, over, or along: tread the pavement.
trundle. vb. 1. to move heavily on or as if on wheels: the bus trundled by. 2. (tr) to rotate or spin. n. 3. the act or an instance of trundling. 4. (Mechanical Engineering) a small wheel or roller. 5. (Mechanical Engineering). a. the pinion of a lantern.