close in on(In early 2005, Virginia police closed in on a suspected child abuser – a man in his 40s who cops say drove four hours to meet a 13-year-old girl he'd met on the Internet. VLZ_58)
holler at("Holler at me" is a Black English expression that means "get in touch with me" or "contact me." It is often used casually between friends or acquaintances to indicate a willingness to help or communicate further.Alex_Odeychuk)
