Noun

• S: (n) muster (a gathering of military personnel for duty) "he was thrown in the brig for missing muster"
• S: (n) conscription, muster, draft, selective service (compulsory military service)

Verb

• S: (v) muster, rally, summon, come up, muster up (gather or bring together) "muster the courage to do something"; "she rallied her intellect"; "Summon all your courage"
• S: (v) muster (call to duty, military service, jury duty, etc.)