御中[onaka] stomach
御話中[ohanashichuu] busy (phone)
アル中[aruchuu] alcoholism
π中間子[paichuukanshi] pi meson
暗中[anchuu] in the dark

暗中摸索[anchuumosaku] groping in the dark
意中[ichuu] one's mind
意中の女[ichuunoonna] sweetheart
井の中の蛙大海を知らず[inonakanokawazutaikaiwoshirazu] parochial
一日中[ichinichijuu] all day long

御墨付き[osumitsuki] handwriting
墨西哥[mekishiko] Mexico
亜墨利加[amerika] America
翰墨[kanboku] brush and ink
靴墨[kutsuzumi] shoe polish

古墨[koboku] old ink stick
水墨画[suibokuga] India-ink painting
白墨[hakuboku] blackboard chalk
筆墨[hitsuboku] stationery