der Imbiss
snack
A small, quick meal eaten between main meals; a snack.
Nach der Wanderung aßen wir zur Stärkung einen kleinen Imbiss.
After the hike, we had a small snack to regain our strength.

snack / snack bar
Loading your saved state.
snack
A small, quick meal eaten between main meals; a snack.
Nach der Wanderung aßen wir zur Stärkung einen kleinen Imbiss.
After the hike, we had a small snack to regain our strength.

The word 'Imbiss' (snack/snack bar) is derived from the old verb 'imbeißen', which means something like 'hineinbeißen' (to bite into). So an 'Imbiss' is literally a 'bite into,' a small meal.
Für einen richtigen Hunger ist das nur ein kleiner Imbiss.
If you're really hungry, that's only a small snack.
The verb and preposition reveal whether the meal or the shop is meant. 'Einen Imbiss essen' (to eat a snack) or 'nehmen' (to have/take) refers to the food. 'Zum Imbiss gehen' (to go to the snack bar) or 'an einem Imbiss warten' (to wait at a snack bar) refers to the place.
Wir können uns am Imbiss treffen und dort etwas essen.
We can meet at the snack bar and eat something there.
A place where you can buy a snack is often also called 'Imbissbude' (snack stand) or 'Imbissstand' (snack stand). These words emphasize the often small, simple character of the shop.
Die beste Currywurst der Stadt gibt es an dieser kleinen Imbissbude.
The best currywurst in the city is at this little snack stand.
food / meal / eating
'das Essen' and 'der Imbiss' can both mean a meal or something to eat. 'das Essen' is more general: it can be a whole lunch, dinner, or food in general. 'der Imbiss' is usually smaller and quicker, often between two main meals. In addition, 'der Imbiss' can also be a small shop where you buy quick dishes. Learners may confuse the words because you get food at an 'Imbiss' (snack bar). As a practical rule: for a meal in general, say 'Essen'; for a small snack or the shop, say 'Imbiss'.

Vor dem Termin holen wir uns schnell einen Imbiss am Bahnhof.
Before the appointment, we'll quickly grab a snack at the train station.
Vor der Reise bereitet Maria das Essen für die Kinder vor.
Before the trip, Maria prepares the food for the children.