(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.

(computing, informal) A program that automatically deletes spam (unsolicited commercial email).

plural of killer language

plural of giant-killer.

plural of honour killer

(Britain, Canada) Someone who commits an honour killing.

(Singapore) Unwanted items thrown from high-rise apartment buildings, posing a danger to pedestrians below.