Wiktionary
love egg
n. A small vibrating egg-shaped sex toy designed for vaginal or anal stimulation.
Wikipedia
Love egg
A love egg is a type of sensual vibrator that is egg or bullet shaped that can be completely inserted into the vagina or anus due to their small size. They can also be referred to as egg vibrators or bullet vibrators, depending on their shape. Egg vibrators are included in the group of the small and discrete sex toys that measure 2–3 inches in length and ¾ inches in width. Though less popular than wand-shaped vibrators, they are a common sex toy and are widely available.