The word "relish" has multiple meanings, depending on its context.
1) In a general sense, it can refer to any food or condiment that adds flavor and zest to another dish. For example, one might say they added relish to their sandwich for extra taste.
2) Relish can also be used as a verb meaning to enjoy something with enthusiasm or pleasure. For instance, "I really enjoyed the movie; I couldn't help but relive my childhood memories."
3) In some contexts, it could mean to endure or tolerate something unpleasant. An example sentence would be: “Despite the pain in her knee, she was determined to finish the race and didn’t let it stop her.”