A large wasp (Pompilus formosus) that captures the Texan tarantula (Mygale hentzii) and places it in its nest as food for its young, after paralyzing it by a sting.

Sphecius speciosus, a large digger wasp that hunts cicadas.

Any of several species of velvet ant in the family Mutillidae, which are known for their painful stings.

An electronic stage in a television set that cuts off the color amplifiers when a monochrome signal is received.

plural of color killer

plural of mule killer

(US, Southern US) Any of various unrelated arthropods, including whip scorpions, velvet ants, mantises, wheel bugs, and walking stick insects, that have been erroneously believed to kill livestock by stinging them or being swallowed.

plural of killer diller

(slang) A person or thing that is astonishing, outstanding, or exciting.

(slang) Excellent, terrific, outstanding, or wonderful.