All 4 Uses

summon
in
Dr. Jekyll and Mr. Hyde
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The footman came at the summons, very white and nervous.†
p. 61.5 *

summons = calls forth; or a document calling to come
I want you to postpone all other engagements for to-night—ay, even if you were summoned to the bedside of an emperor; to take a cab, unless your carriage should be actually at the door; and with this letter in your hand for consultation, to drive straight to my house.†
p. 71.2

summoned = called forth; or called to come
I went myself at the summons, and found a small man crouching against the pillars of the portico.†
p. 75.5

summons = calls forth; or a document calling to come
Thereupon, I arranged my clothes as best I could, and summoning a passing hansom, drove to an hotel in Portland Street, the name of which I chanced to remember.†
p. 102.6

summoning = calling forth; or calling to come

Definitions:

(1) (summon)
to call to appear, come, or take action -- often used for official or serious situations, including legal notices or emotional/spiritual urges
(2) (meaning too rare to warrant focus)