* Someone eating: "I swallowed my food quickly so I could get back to work."
* Someone experiencing difficulty: "I had to swallow my pride and ask for help."
* Someone talking about birds: "The swallow flew gracefully across the sky."
* Someone discussing medicine: "I had to swallow a large pill."
* Someone describing a dangerous act: "He swallowed the bait hook, line and sinker."
* Someone using a metaphor: "She swallowed her anger, but it was still evident in her voice."
Essentially, anyone who wants to describe the act of consuming something, the feeling of accepting something difficult, or the motion of swallowing, might use this word in their sentence.
Let me know if you have a specific context in mind, and I can help you further.