design, pattern, build, nature, character, handle, crank, grip, knob, shaft
柄 centers on the idea of a shaped or patterned core that defines something's nature or function: a handle or grip that gives control, a design or pattern that gives character, or the inherent build or nature of a thing.
柄 combines 木 (tree, wood) with 丙, which likely contributes the sound and may relate to a handle or stalk. The character originally referred to a wooden handle or shaft, and later extended to pattern or nature.
A wooden (木) handle (丙) is the grip of a tool, and just as a handle shapes how you use it, 柄 also means the pattern or character that shapes something's nature.
For ヘイ, imagine a wooden handle shaped like the letter H: H -> ヘイ, and you grip it firmly.
pattern; design
handle; grip
pattern; design
brand; make; description
personality; character; personal appearance; gentility
matter; thing; affair; circumstance
small build; small stature; petite
achievement; feat; meritorious deed; distinguished service
one's person
relationship; relation; terms (good, friendly, etc.)
social standing of a family; lineage; parentage; pedigree
worth; merit; value; good point; strong point; redeeming feature; saving grace
role; duty; position; part
arrogant; haughty; insolent
large build
design; pattern
national character; regional character
long handle; long-handled spear; long shaft
new pattern
patterned cloth