1. past tense of muster; gathered or assembled (people or things), especially for a specific purpose
2. past tense of muster; summoned or called forth (courage, strength, energy, etc.)

Examples

• The captain mustered his troops at dawn.
• She mustered all her courage before giving the speech.
• The volunteers were mustered in the town square.
• He mustered enough strength to finish the race.
• The committee mustered support for the new proposal.
• They mustered their resources to help the victims.
• The general mustered reinforcements from nearby bases.