late 13c., "on the ground," from a- "on" (see a- (1)) + ground (n.). Of ships and boats, "stranded," from c. 1500.

stuck on the sand or rocks. Ships sometimes run aground and cannot move without help

(adj) stuck in a place where a ship can no longer float(adv) with the bottom lodged on the ground

Touching or fast to the bottom.

Resting on the bottom.

Touching or fast to the bottom.

When a vessel is resting on the bottom. In most cases a situation to be avoided.

Resting on or touching the ground or bottom (usually involuntarily).

Resting on the bottom.

Said of a vessel resting on or touching the ground or bottom of a waterway.

Touching or fast to the bottom.

Resting on the bottom.

Resting on or touching the ground or sea bottom ,usually involuntarily.

When the hull or keel is touching or fast to the bottom of any body of water; on or onto the shore.

 When a vessel is resting on the seafloor

resting on or touching the bottom. If his ship goes aground and is not an amphibious ship designed to do so, it is very bad news for the Captain.

Resting on or touching the ground or bottom.

Touching or fast to the bottom. .

When a boat is in water too shallow for it to float in, i.e: the boat's bottom is resting on the ground

Resting on or touching the ground or bottom (usually involuntarily).

Resting on or touching the ground or bottom (usually involuntarily).

when the hull or keel is touching, resting or lodged on the bottom of the body of water you have been sailing on

Touching or stuck on the bottom

When the hull or keel is touching or fast to the bottom of any body of water; on or onto the shore.

A vessel is said to be aground when her keel or bottom rests on the ground.

Resting or lodged on the bottom.

Stuck-usually on a shoal or rock-when you didn't intend to be.

of a ship resting on the ground in shallow water