any of numerous ticks of the family Argasidae, lacking a dorsal shield and having the mouthparts on the underside of the head.
Tick, Tock: What Is The “Doomsday Clock?”What is the Doomsday Clock? Doomsday is one of those evocative words that paint a very vivid picture. As our definition states, “the day of the Last Judgment, at the end of the world; nuclear destruction of the world; given to or marked by forebodings or predictions of impending calamity; especially concerned with or predicting future universal destruction.” As you can see, it’s about as bottom …
Compare hard tick.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019