出典:Wiktionary
From rūbrīca (“red ochre”) + -ō (verb-forming suffix). When scanned as rŭbrĭcō, perhaps reanalyzed or recomposed as ruber (“red”) + -icō (verb-forming suffix); compare albicō (“to make white, whiten”) from albus (“white”) + -icō.
rūbrīcō (present infinitive rūbrīcāre, perfect active rūbrīcāvī, supine rūbrīcātum); first conjugation (uncommon)