A tricky one this. You need to know an unusual North American meaning of chum, as the definition. It’s four-letter style of walking, enclosing a five letter word for cycle and a single letter abbreviation for British.
Thanks Quisling for clearly identifying the definition and neat parsing. I could get the word. A very tough one and impossible for me to solve without your help.
Bharat, the definition is 'white'.
A French term for 'like', or 'in the manner of' often used in cooking (1,2), + an abbreviation for 'black' + a particular type of garden flower.