expression:

• days and nights passing by quickly; months and years flying by; Time flies - four character idiom

noun:

• coracoid

noun:

• black soybean

noun:

• black rhinoceros horn

noun:

• black drongo (Dicrurus macrocercus)

noun:

• sun and moon - abbreviation ➜ 金烏玉兎
• time; the years; the months

noun:

• coracoid ➜ 烏口骨

noun:

• miswriting a word; using the wrong kanji to write a word

noun / ~の noun:

• pitch-black; darkness

noun:

• coarse dark-brown paper

noun:

• coracoid - obscure term ➜ 烏口骨

noun / ~の noun:

• disorderly gathering

noun:

• crow dipper (Pinellia ternata)

noun:

• black Japanese striped snake (Elaphe quadrivirgata); Japanese black ratsnake ➜ 縞蛇【しまへび】

noun / adjectival noun:

• foolish thing; stupid thing; absurdity

noun:

• man-of-war fish (Nomeus gronovii)

noun:

• dried mullet roe

noun:

• Wuhuan (proto-Mongolic nomadic people)

noun:

• cry of the crow

noun:

• Corvus (constellation); the Crow; the Raven - Astronomy term

noun:

• Chinese puffer (Takifugu chinensis)

noun:

• oolong (tea) - abbreviation - From Chinese ➜ ウーロン茶【ウーロンちゃ】

noun:

• vetch; tare

noun:

• wild oat (Avena fatua); wild oats
• oat (Avena sativa); oats - esp. 燕麦

expression / ~する verb (spec.):

• to be reduced to ashes ➜ 烏有に帰す