noun
packed meal; food to go; portable provisions
Refers to food prepared in advance to be carried and eaten elsewhere, such as for travel, hiking, or work. Slightly formal or written; in casual speech 弁当 or 携帯食 may be more common.
登山のときは、必ず携行食を持っていく。
When mountain climbing, I always bring portable provisions.
災害に備えて、
I keep some packed food in my backpack in case of a disaster.