To bring a ship or boat into a dock for loading, unloading, or repairs. The captain decided to dock the ship at the nearest port for maintenance.
To deduct or withhold part of someone's wages, typically as a penalty. The company decided to dock his pay for being late to work.
To connect a spacecraft with another spacecraft or a space station. The astronauts successfully docked the shuttle with the space station.
To cut short or remove part of an animal's tail or other appendage. The farmer docked the lambs' tails to prevent flystrike.
To place an electronic device in a docking station so that it can charge or connect to other peripherals. I always dock my laptop at the office to use the external monitors.