muster is the dictionary form of mustered Definition of muster
muster has definitions from the field of military
1
[ verb ] gather or bring together

Examples

"muster the courage to do something" "she rallied her intellect" "Summon all your courage"

2
[ verb ] call to duty, military service, jury duty, etc.
3
[ noun ] (military) a gathering of military personnel for duty

Examples

"he was thrown in the brig for missing muster"

4
[ noun ] (military) compulsory military service
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