癶 ~ bō ~ “footsteps” radical (105)
aka: 登字头 [登字頭], legs, dotted tent, Kangxi Radical Dotted Tent
• 癶 is not an independent character
登 ~ dēng ~ to ascend, to mount, to publish, to record, to tread on
癸 ~ guǐ ~ tenth heavenly stem
I am not quite happy with calling this radical “footsteps”, but having two “legs” radicals would be confusing and “dotted tent” just annoys me to no end.
If you take “footsteps” to be an awkward shorthand for “feet stepping on something” it kind of makes sense.