pivot foot
In sports such as basketball or baseball, the foot that stays in place while the other moves.
Figurative use: the central point or main basis of an argument, policy, or activity. Often used in phrases like 軸足を置く (to place emphasis on).
In basketball, moving your pivot foot results in a traveling violation.
The government is placing emphasis on economic measures.
His arguments are always grounded in data.
Compound of 軸 (axis, pivot) and 足 (foot). The figurative sense extends the idea of a stable pivot point to abstract contexts.