Synonyms for Summons (same or very similar meaning)
WordNet sense 1 (a request to be present):
bidding
WordNet sense 2 (a writ issued by authority of law; usually compels the defendant's attendance in a civil suit; failure to appear results in a default judgment against the defendant):
process, process
WordNet sense 3 (call in an official matter, such as to attend court):
cite, summon
From the ODE community, based on WordNet
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