What does «lahwah» denote in «لَهْوَتُهَا قُضَاعَةَ أَجْمَعِينَا»?

ʿAmr ibn Kulthūm: Address to Abā Hind, Tribal Pride and the Mill of War (Verses 23–38)

• The point of a spear
• The top of a wall
• A portion of grain put into the mill
• A cup of water