| middle of the road(noun, center, middle, target) |
| midpoint(noun, center, middle, target) |
| midst(noun, center, middle, target) |
| navel(noun, center, middle, target) |
| nucleus(noun, center, middle, target) |
| omphalos(noun, center, middle, target) |
| pith(noun, center, middle, target) |
| pivot(noun, center, middle, target) |
| place(noun, center, middle, target) |
| polestar(noun, center, middle, target) |
| quick(noun, center, middle, target) |
| root(noun, center, middle, target) |
| seat(noun, center, middle, target) |
| nave(noun, center, middle, target) |
| center(noun, point, average, root, focus) |
| middle point(expression, place, heart, focus, middle) |
| starting point(expression, root, mainspring, intermediacy) |
| breeding ground |
| bulls-eye(root, mainspring, intermediacy) |
| coal and ice(expression, idiom, root, mainspring, intermediacy) |