Quote: who can tell me the meaning of this freeze:beat about the bush
I believe you mean "phrase" rather than "freeze".
Someone who is beating around the bush is somone who is avoiding coming to a point.
In group hunts there are "beaters" who drive the game to the hunters who will shoot. Some beaters are industrious and move forward. Others make a great show of beating the bushes where game is not likely to be found.