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

御坊ちゃん[obocchan] son (of others)
いたずら坊主[itazurabouzu] mischievous boy
御坊[onbou] cemetery guard
丸坊主[marubouzu] close-cropped head
黒ん坊[kuronbou] dark-skinned person

桜ん坊[sakuranbo] (edible) cherry
三日坊主[mikkabouzu] one who can stick to nothing
次男坊[jinanbou] second son
照々坊主[teruterubouzu] paper doll to which children pray for fine weather (usu. white, and shaped like a Buddhist priest)
食いしん坊[kuishinbou] glutton