1. an instance of seeing or observing something, especially something unusual or noteworthy
2. the action of aiming a weapon or instrument by looking through its sights
Usage: military; hunting

Examples

• There was a rare bird sighting in the park yesterday.
• The UFO sighting was reported by several witnesses.
• Wildlife sightings are common along this hiking trail.
• The first sighting of land excited the sailors.
• The hunter spent time sighting his rifle before the hunt.
• Whale sightings occur frequently during migration season.