A meal or light food taken before doing something, to fortify oneself or prepare physically for an activity.
出発前に軽く腹ごしらえをしておこう。
Let's have a light bite before we leave.
登山の前にはしっかり腹ごしらえをしておくことが大切だ。
It's important to eat well before climbing a mountain.
試合の前に選手は腹ごしらえをして集中力を高める。
Before a match, players eat to prepare and raise their concentration.