"Fennel bulbs" refers to the edible, rounded bottom part of a fennel plant that is often used in cooking. It has a crunchy texture, similar to celery, and a mild licorice-like flavor. Full definition
Remove core and thinly slice fennel bulb - place sliced fennel in medium bowl. (frompastatopaleo.com)
1 large fennel bulb, tops and tough core removed, cut into 8 wedges. (mamaeatsplants.com)
This soup was created when I decided to make a room temperature soup with a basket of ripe plum tomatoes and looking through my pantry found onions and fresh fennel bulbs in my refrigerator. (reciperebuild.com)