- noun nucleus; backbone; mainstay; key figure
- takes の, noun medium-level; mid-level; middle-ranking; midsize
- noun main body (of troops); crack troops; select troops
- baseball center field; centre field; center fielder; centre fielder
- athlete competing in the middle-number match in a team competition, i.e. second in 3-on-3, third in 5-on-5 (kendo, judo, etc.)
中堅
ちゅうけん
nucleus