to get ahead, to stride, to excel
踔 centers on moving forward with energy and standing out: striding ahead, getting ahead of others, or excelling through bold movement.
踔 combines the foot radical 足 with 卓, which likely contributes both sound and the idea of being outstanding or elevated. The character suggests striding forward with distinction.
The foot radical 足 beside 卓 (outstanding) suggests a foot stepping out ahead: striding forward and excelling.
For トウ, imagine a toe striding ahead: toe -> トウ, and the foot 足 moves forward to excel.