verb
-mons; -moned; -moning
[+ obj] formal
to order (someone) to come to a place
to order (someone) to appear in a court of law - often used as (be) summoned
to ask for (someone or something) to come :to send or call for (someone or something)
to get (the courage, energy, strength, etc., that you need to do something) by making a special effort
to ask or order a group of people to come together for (a meeting)
summon up
[phrasal verb]
summon up (something) :to bring (a memory, feeling, image, etc.) into the mind