that Nichiren Buddhists pronounce ho is fa in Chinese (and
in Sanskrit). It means "rule," "law," and, by extension, "model" or "pattern."
The modern form (used in the gongyo book) is composed of two elemental
characters: chu, the character to the right and shui to the
Jug? Water? How could this mean "Law?"
Law (fa) removes (chu) vices and makes morals as smooth as water (shui).
There is an older combination of elemental characters used to construct fa (Jp. ho, English "law"). Fa was composed of chi and cheng.
Chi is a triangle. It means "union" or "junction of different elements," and "adapting to the whole." To understand this meaning, imagine the sides of the triangle converging into a single point.
Cheng is footprints leading directly to the crest of a hill then viewing all directions. Because the prints do not stray, cheng means "righteousness."
Fa means "adapting (chi) towards righteousness (cheng)" — therefore, "law."
Dr. Martin Luther King Jr. wrote: "We will not be satisfied until justice rolls down like waters and righteousness like a mighty stream."