1. "To get up" or "to wake up":
* "Get up early and get your chores up."
* "I was up all night watching the cattle."
2. "To be in a good mood or feeling well":
* "He's feeling up today."
* "I'm not up to par this morning."
3. "To increase or improve":
* "The price of cattle is up."
* "My horse is up to speed now."
4. "To consume" or "to eat":
* "Let's up some grub."
* "I'm up for a sandwich."
5. "To approach" or "to go towards":
* "I'm up the road a ways."
* "We're up the mountain to the ranch."
6. "To be done or finished":
* "The work is up for the day."
* "The sun's up."
7. "To be aware" or "to know":
* "You're up on the latest news, aren't you?"
* "He's up on what's going on."
The context is key to understanding the meaning of "up" in cowboy slang.
Remember: While these are common meanings, the specific meaning of "up" can vary depending on the situation and the speaker.