Japanese edit

For pronunciation and definitions of ぬま – see the following entries.
S
[noun] a swamp, a bog, a marsh, a wetland
[noun] (slang) inescapable pit of addiction to games, etc.
4
[noun] [720] (archaic, possibly obsolete) fortress, redoubt
[noun] [720] (archaic, possibly obsolete) important point, key
Alternative spellings
要害, ぬみ
沼間
[proper noun] a surname
(This term, ぬま, is the hiragana spelling of the above terms.)
For a list of all kanji read as ぬま, see Category:Japanese kanji read as ぬま.)