launch

The movement of a vessel from land into the water; especially, the sliding on ways from the stocks on which it is built. (Compare: to splash a ship.)

The act or fact of launching (a ship/vessel, a project, a new book, etc.).

An event held to celebrate the launch of a ship/vessel, project, a new book, etc.; a launch party.

“book launch”

To throw (a projectile such as a lance, dart or ball); to hurl; to propel with force.

To pierce with, or as with, a lance.

To cause (a vessel) to move or slide from the land or a larger vessel into the water; to set afloat.

“The navy launched another ship.”

To cause (a rocket, balloon, etc., or the payload thereof) to begin its flight upward from the ground.

“NASA launched several unmanned rockets before launching any of the Mercury astronauts.”

To send out; to start (someone) on a mission or project; to give a start to (something); to put in operation

“Our business launched a new project.”

To start (a program or feature); to execute or bring into operation.

“Double-click an icon to launch the associated application.”

To release; to put onto the market for sale

Of a ship, rocket, balloon, etc.: to depart on a voyage; to take off.

(often with out) To move with force and swiftness like a sliding from the stocks into the water; to plunge; to begin.

“to launch into an argument or discussion”

(of a program) To start to operate.

“After clicking the icon, the application will launch.”

The boat of the largest size and/or of most importance belonging to a ship of war, and often called the "captain's boat" or "captain's launch".

A boat used to convey guests to and from a yacht.

An open boat of any size powered by steam, petrol, electricity, etc.