Green Salad emoji is the picture of a plate filled up with lots of greenery, various healthy vegetables like tomatoes, cucumbers, onions, and other products like boiled eggs (all depends on the emoji provider). As for the meanings, this emoji may be used in the context of food and eating in general (especially together with other emojis like 🥓 Bacon emoji, for example). Also, it may mean healthy way of life and dieting.
Examples of using
“I cannot believe diet could be that tasty 🥗”
“I love eating salads 🥗”