dotted tent radical (no. 105)
癶 is a radical character whose meaning is tied to its visual shape: a dotted tent or a pair of legs stepping outward. It does not have a standalone word meaning beyond its use as a component in other kanji.
癶 is a pictograph of two feet stepping outward, often interpreted as a dotted tent shape in modern descriptions. Its historical origin as a foot radical is well established.
The two outward strokes look like legs stepping apart, and the top dot suggests a head or a tent peak. Picture a person standing with feet apart under a small dotted tent.
For ハツ, imagine a hat-shaped tent: hat -> ハツ, and the tent's peak is the dot on top of 癶.