Tiller/ˈtɪlər/ Definition 1 of 4Pro Tip 1/2Nautical Context Used in the context of controlling a boat, symbolizes leadership and direction. The captain took the tiller, guiding us through the fog. Pro Tip 2/2Non-electric Steering Refers to manual, rather than electronic, boat steering—reveals a hands-on approach. Using the tiller requires physical effort and skill.