Definition

Noun: 1. A portable internal-combustion engine mounted externally on the stern of a small boat: An "outboard motor" is a self-contained propulsion unit that includes an engine, a gearbox, and a propeller. It is designed to be attached to the transom (the flat back end) of a boat, outside the hull.

Usage

The term "outboard motor" is used to specify the type of marine engine that is mounted externally. It is a compound noun, and the key characteristic is its location outside the boat's main hull. - It is the primary means of propulsion for many small boats, such as dinghies, fishing boats, and skiffs. - It is contrasted with an inboard motor, which is installed inside the boat's hull.

Examples

Advanced Usage

• "To tilt up an outboard motor": To raise the motor out of the water, often to prevent damage when in shallow water or when the boat is not in use.
  • Remember to tilt up the outboard motor when you beach the dinghy.

Variants and Related Words

• Outboard (noun, informal): A common shortened form of "outboard motor."
  • We need more fuel for the outboard.
• Outboard engine: A synonymous term.
• Inboard motor/engine: The antonym; an engine mounted inside the boat's hull.

Synonyms

• Marine engine (external)
• Boat motor (when context implies external mounting)

Related Phrases

• Outboard motor bracket: The metal frame on a boat's transom designed to hold the motor.
• Outboard motor well: A compartment in some boats where an outboard motor is mounted, partially enclosing it while keeping it external to the hull.

Noun

1. internal-combustion engine that mounts at stern of small boat