gust of wind; squall
Refers to a sudden, strong blast of wind. Often used in weather contexts or metaphorically for a sudden change.
A gust of wind blew and the leaves swirled up.
vanguard; first wave; leading group
Used for the first group or wave in a movement, attack, or trend. Often appears in phrases like 一陣を切る (to lead the charge).
As the typhoon approached, occasional strong gusts raged.
He entered the overseas market as part of the vanguard of the new business.
He led the charge by announcing his candidacy first in the election campaign.
gust of wind
Compound of 一 (one, first) and 陣 (battle formation, camp). Originally referred to the first battle formation or vanguard, later extended to a sudden gust of wind, possibly from the image of a sweeping attack.