Glossary entry (derived from question below)
Portuguese term or phrase:
oposição de embargos de declaração
English translation:
filing of a motion for clarification
Portuguese term
Portugal
Experience - 12 years - Master in Lang.
Native in: Portuguese (Variants: Brazilian, European/Portugal)
Works in: Portuguese to English, English to Portuguese, Spanish to Portuguese, and 3 more.
oposição de embargos de declaração
Proposed translations
Translations by lawyers for lawyers
Native in: English 
Works in: Portuguese to English, English
filing of a motion for clarification
Manual de Padronização de Textos do STJ, pág 255.
No contexto, a palavra oposição quer dizer apresentação de oposição em juízo.
"opor = Apresentar oposição em juízo."
Manual de Padronização de Textos do STJ, pág 276.
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Note added at 1 day 2 hrs (2020-09-08 12:51:09 GMT)
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A “motion for clarification” is just what the name implies: a request for an explanation from the trial court as to the meaning of a prior, allegedly unclear, order.
http://divorceinfo.com/what-is-a-motion-for-clarification.ht...
Brazil
Translator, English Teacher, Business
Native in: Portuguese (Variant: Brazilian)
Works in: English to Portuguese, Portuguese to English
opposition / requirement of motion for clarification of judgement
Brazil
32 years engineering/law/contracts
Native in: English (Variant: US) 
, Portuguese (Variant: Brazilian)
Works in: English to Portuguese, Portuguese to English
Austria
Retd.T&I, Barrister & Austro-Advokat
Native in: English (Variants: British, Scottish)
Works in: Spanish to English, English to Spanish, French to English, and 5 more.
entry of judicially reviewable objections US: writ of error
Consta da Ementa > de Emenda de um Recurso Especial ? this connotes to me a JR = judicial review, not of administrative action - as it would be in the UK - but of judg(e)ment on a special or extraordinary appeal.
A US-Am. type interplea or interpeader is IMO incongruous in this context and 'counter-caveat' doesn't ring any bells.
US-Am Definition of interplea: the plea of a defendant disclaiming any interest in the subject matter of a controversy and calling for an interpleader proceeding between the true claimants-
US-Am writ of error> a writ issued by an appellate court to the court of record where a case was tried, requiring that the record of the trial be sent to the appellate court for examination of alleged errors.
http://eng.proz.com/kudoz/portuguese-to-english/law-general/6334819-terceiros-embargos.html
http://eng.proz.com/kudoz/portuguese-to-english/law-general/912015-oposição-de-embargos.html
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