warm up(1) – prepare for a physical activity by exercising beforehand
You need to warm up before you start jogging or you could strain your muscles.
warm up(2) – become more interesting or enjoyable
The party took a long time to warm up but once it did it was brilliant! We had a great time!
warm up(3) – become warmer
It’s freezing outside but don’t worry, the house warms up really quickly once the heating is turned on.
watch out – be careful
‘Watch out!’ he shouted, as she ran towards the closed glass door, but she didn’t hear him…