This is a ship anchor, which is the main component of mooring equipment, usually made of metal, and used to throw it from the ship and sink it to the bottom of the water, so as to fix the ship and prevent it from drifting away from its current position.
The shape of anchor depicted by each platform is basically the same, with an anchor bar on the top, a cross and a circle, a circular arc on the bottom and arrows on both ends. The colors of anchors vary from platform to platform, some are silvery white, some are blue, and some are gray. In addition, the Microsoft platform also depicts the shadow part of the anchor. This emoticon can represent anchor, ship landing, waterway transportation and object fixation.