1. fair crack of the whip - Noun
2. fair crack of the whip - Interjection
fair crack of the whip
(Australia, colloquial, informal) Fair go, fair suck of the sauce bottle; used as an appeal for reasonableness.
fair crack of the whip (plural fair cracks of the whip)
(UK, colloquial, informal) An equitable opportunity to achieve something; a fair go.