koi

i-Adjective

1. deep (colour); dark

そのピアノは うつくしい、濃 褐色 かっしょく つくられていました。
sono pianowa utsukushii koi kasshokuno kide tsukurarete imashita.
The piano was made of beautiful, dark brown wood.
i-Adjective

2. strong (flavour, smell, etc.)

コーヒーはどんなふうにしましょうか。濃 いブラックがいいですか。
kōhiiwa donna fūni shimashōka. koi burakkuga iidesuka.
How do you like your coffee? Strong and black?
i-Adjective

3. thick (consistency); dense

みずよりも し。
chiwa mizuyorimo koshi.
Blood is thicker than water.
i-Adjective

4. strong (possibility, etc.)

i-Adjective

5. thick (i.e. "as thick as thieves"); close; deep (love, etc.)