1. Literally, to become hot in temperature. Now that the sun is out, it's really getting hot! Start running the water now—it takes a while to get hot.
2. Of a person or group, to begin experiencing a particularly successful period. Is that team really going into the playoffs on an eight-game winning streak? Boy, they got hot at the right time. Chuck's really getting hot—he just won another hand of blackjack.
3. Of a place or situation, to become busy, bustling, or chaotic. The restaurant is getting hot, and we're understaffed, so it should be a long night.
1. in. to begin to get lucky, as in gambling. I knew I was getting hot when I got all the right cards.
2. in. to become busy or hectic. Things always get hot around here toward the end of the month.