DCHP-1 Online
cow-call 
n. a device for making such a call, especially a bark horn.
See also: moose-call (def. 2)
- 1946 I have never used cow-calls for two good reasons: it is in execrable bad taste, and it is rarely effective.
- 1946 I have never used cow-calls for two good reasons: it is in execrable bad taste, and it is rarely effective.