noun The duty of directing a ship, usually used with the verb to have or to take and accompanied by the article "the."
The officer of the deck has the conn of the vessel; the captain took the conn when he reached the bridge.
verb To direct a ship; to superintend the steering of (a vessel); to watch the course of (a vessel) and direct the helmsman how to steer (especially through a channel, etc, rather than steer a compass direction).