Usually the sound associated with hawkin, chicken hawkin or swooping; Sound made by one to indicate that he (or she) intends on swooping. (Usually sounded off in pairs)
Frank straight said "Caw! Caw!" to John before he swooped in on Cecilia.
Derived from a Marine Corps term knows as "shitbird". This is a person who is worthless, nasty and an overall dissapointment to the world. "Caw" is the sound a shitbird would make.
"CAW bitch", Sam said to JJ when he walked in to work.