sum·mon 
/ˈsʌmən/ verb
sum·mons; sum·moned; sum·mon·ing /ˈsʌmən/ verb [+ obj] formal 1 a : to order (someone) to come to a place
▪ The queen summoned him back to the palace.
b : to order (someone) to appear in a court of law — often used as (be) summoned ▪ She was summoned to (appear in) court. ▪ She was summoned (to appear) before a judge. 2 : to ask for (someone or something) to come : to send or call for (someone or something)
▪ She summoned a doctor. ▪ The boy summoned help. 3 : to get (the courage, energy, strength, etc., that you need to do something) by making a special effort
▪ She couldn't summon [=muster] the strength/energy to finish the race. — often + up ▪ He finally summoned up the courage to ask her out on a date. 4 : to ask or order a group of people to come together for (a meeting)
▪ The president summoned [=convened] a meeting/conference.
▪ The queen summoned him back to the palace.
b : to order (someone) to appear in a court of law — often used as (be) summoned ▪ She was summoned to (appear in) court. ▪ She was summoned (to appear) before a judge.
▪ She summoned a doctor. ▪ The boy summoned help.
▪ She couldn't summon [=muster] the strength/energy to finish the race. — often + up ▪ He finally summoned up the courage to ask her out on a date.
▪ The president summoned [=convened] a meeting/conference.
summon up [phrasal verb]
summon up (something) : to bring (a memory, feeling, image, etc.) into the mind
▪ Visiting his old house summoned up memories of his childhood. — see also summon 3 (above)
▪ Visiting his old house summoned up memories of his childhood. — see also summon 3 (above)
