What does this sentence mean, the meaning of by in the sentence,

Because of the weight of the snow on it, it turned into ice.

It means:

Under the action of the gravity (molding pressure) of the snow above, this (snow below) is transformed into ice (form).

With the help of. . . Way, because.

pass by

The expression of prepositions near ...; Due to; Passing by;

Passing by; Used to indicate reservation or preservation; A short visit;