大納言

From 大 (dai-, “big, great”) +‎ 納言 (nagon, “counselor”, on-reading of monomōsu-tsukasa).

• (Tokyo) だいなごん [dàínáꜜgòǹ] (Nakadaka – [3])^[1]
• IPA^(key): [da̠ina̠ɡõ̞ɴ]

大(だい)納(な)言(ごん) • (dainagon) 

1. (politics, historical) a chief counselor in the 太政官 (Daijō-kan, “Great Council of State”, the highest government office under the 律令 (Ritsuryō) system)
2. (politics, historical, obsolete) a government office in the 太政官 (Dajō-kan, “Great Council of State”, the highest governing body during the early Meiji period)
3. (colloquial) short for 大納言小豆 (dainagon azuki): a large, dark red bean cultivar
4. a type of 小紋 (komon, “fine pattern”)

   Synonym: 加島屋小紋 (Kashima komon)

5. a detailed 鮫小紋 (samekomon, literally “shark komon”) once used solely by the Kishū-Tokugawa family

• 中(ちゅう)納(な)言(ごん) (chūnagon, “middle counselor”)
• 少(しょう)納(な)言(ごん) (shōnagon, “lesser counselor”)

Possibly from Old Japanese.

From 大い (ōi, “senior, upper”) +‎ 納言 (monomōsu-tsukasa, “counselor”).

大(おおい)納言(ものもうすつかさ) • (ōi monomōsu-tsukasa) ^{←おほいものまうすつかさ (ofoimonomausutukasa)?}
(alternative reading hiragana おおきものもうすつかさ, rōmaji ōki monomōsu-tsukasa, historical hiragana おほきものまうすつかさ)

1. (politics, historical, archaic) a chief counselor in the 太政官 (Ōimatsurigoto no Tsukasa, “Great Council of State”, the highest government office under the 律令 (Ritsuryō) system)
   • 938, Minamoto no Shitagō, Wamyō Ruijushō, volume 5:

     大納言　職員令云：大納言［於保伊毛乃萬宇須豆加佐］

     Chief counselor - according to the Shikiin-ryō: the chief counselor is [pronounced as] ōi monomōsu-tsukasa

2. (politics, historical, obsolete) a government office in the 太政官 (Ōimatsurigoto no Tsukasa, “Great Council of State”, the highest governing body during the early Meiji period)

• 中(なかの)納言(ものもうすつかさ) (naka no monomōsu-tsukasa, “middle counselor”)
• 少(すない)納言(ものもうすつかさ) (sunai monomōsu-tsukasa, “lesser counselor”)

• 黄(こう)門(もん)監(かん) (kōmonkan), 黄(こう)門(もん) (kōmon)