Concerning "Foku-ho"... I suspect you are doing an offshoot of either Kamishin Ryu or Takeshin Sogo Budo. Within those traditions the use of the term Foku-ho does indeed make reference to the japanized word for "fork".
In the basic list of those arts there is a technique called Kote Shomei Odori. It has 4 basic variations that are taught to beginners. Within the style proper there are no proper names for the henka taught as a base. Over time people began calling each of the 4 basic henksa by a familiar name. One of those evolved names was "foku-ho". In these traditions it is a wrist displacement using the space between the index finger and the thumb.
hope this helps,
Arthur
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Arthur Sennott