A more thorough explanation:

Definition:slay, verb. To kill (a person), especially in battle.

Examples:

• The knight slayed the dragon with his sword.
• The soldiers slayed their enemies in the fierce battle.
• The assassin was hired to slay the king.

The examples illustrate the definition of "slay" as the act of killing a person, particularly in a violent or combat situation. The first example shows a knight killing a dragon, which can be considered a battle. The second example depicts soldiers killing their enemies in a battle. The third example shows an assassin hired to kill a king, which can also be considered a form of battle or conflict.