megatron

megatron (plural megatrons)

1. A disc-seal tube, used in lighthouses or submersibles.
   • 2015, Taylor, "Monster Squid: The Giant is Real" 28 min:

     We've got Edie, I think she's gone slightly mad, may be off the boil a bit. Chances of that one... two percent. Dr. Ku, ill give that a zero percent chance. Then we've got Steve with his ejaculation megatron. Yeah, I'll give him forty percent chance.

• garmento, metargon