in case

[in case] {adv. phr.}, {informal} 1. In order to be prepared; as aprecaution; if there is need. - Usually used in the phrase "just incase".

The bus is usually on time, but start early, just in case.

The big dog was tied up, but John carried a stick, just in case.

2. [in case] or [in the event] {conj.} If it happens that; if itshould happen that; if; lest.

Tom took his skates in case theyfound a place to skate.

Let me know in case you're not coming.

The night watchman is in the store in case there is ever afire.

Keep the window closed in case it rains.

I stayed home in caseyou called.

In the event that our team wins, there will be a bigcelebration.

What shall we do in case it snows?