Tapeworms are flat worms that live in a person's digestive tract. They can grow to more than 82 feet (30 meters) and live as long as 30 years. Tapeworms are parasites. As you probably know from biology class, parasites are organisms that live in, or on, other organisms (called hosts).
Gluon definition, an unobserved massless particle with spin 1 that is believed to transmit the strong force between quarks, binding them together into baryons and mesons. See more. Dictionary.com
A little background: Quarks are elementary particles that constitute matter. Protons and neutrons, for instance, are composed of three quarks each. Gluons are quanta of energy exchanged between quarks and this is how the strong nuclear force originates. This is similar to how electromagnetic force arises from the exchange of photons between electrically charged particles.