Kaylo
A kaylo was a fruit found on an unnamed planet located in the Delta Quadrant that resembled an Earth apple. Kaylos were poisonous and caused death after even one bite. The consumer's windpipe swelled and pain was felt in the lower regions of the body, starting in the knees and working its way up. 

In 2371, while the away team from the  was searching the planet for food, Lieutenant Joe Carey found a kaylo. Carey was initially excited at the find until Neelix informed him of the deadly and painful effects. ()

de: Kaylo
Plants
Fruits
Poisonous substances