Snack; a light meal or small food eaten between meals.
おやつにスナックを少し食べた。
I had a little snack.
子どもたちは放課後にスナックを買いに行った。
The kids went to buy snacks after school.
Abbreviation for snack bar — an establishment (often small) that serves alcohol, sometimes with karaoke.
今夜は同僚とスナックに行く予定だ。
Tonight I'm planning to go to a snack bar with coworkers.
あのスナックはママさんの接客が評判だ。
That snack bar is known for the owner's hospitality.
Snack food (abbr.) — processed light foods like potato chips, popcorn, etc.
映画を見ながらスナックを食べた。
I ate snacks while watching the movie.
パーティー用にスナックをいくつか買ってきた。
I bought some snacks for the party.