It would be an extremely esoteric and "street" or slang language difference, peculiar to American mechanics or electricians or tool collectors only, Farmer J. Dictionaries published here in the US have the same primary and secondary formal definitions as the Cambridge for a word spelled that way. EDIT: Despite it not appearing in dictionaries, if you go to eBay and type "**** pliers" (or "dike pliers") into the search bar you will get pages and pages of diagonal side-cutting pliers, trust me. Descriptivism at work over prescriptivism.
Thanks Lugz, that's interesting.
Just to try that, after I had finished my tea I put a search in to eBay uk here, and got only 3 results for 'dike pliers', all listings from USA. I got 147 results for '**** pliers', again all were listings from USA.
It seems they're just not described like that here... I've only ever heard them called 'side cutters' or 'side cutting pliers', as in "I say old chap, excuse me, but would you mind awfully if I borrowed those nice American side cutting pliers you have please?"....
I expect the American descriptivism will catch on here after a few years, most things usually do eventually.
I will ask a friend when he visits from Texas for Christmas, he is from here originally and a Land Rover mechanic, it will be something to have a laugh about for sure.