Correct spelling for the English word "stephead" is [stˈɛfɛd], [stˈɛfɛd], [s_t_ˈɛ_f_ɛ_d] (IPA phonetic alphabet).
I apologize, but there is no standard or widely recognized definition of the term "stephead." It appears to be a non-standard or uncommon word, possibly used within a specific context or localized vocabulary. Therefore, it is difficult to provide a dictionary definition for this term.
However, in some cases, "stephead" may refer to an individual who is the head or leader of a stepfamily. A stepfamily is a family unit created through marriage or partnership where at least one of the adults has a child or children from a previous relationship. The "stephead" can be considered the person who acts as the primary authority figure or head of the household in this family arrangement. This usage of the term would be specific to the dynamics of blended families.
Without additional context or clarification, it is challenging to offer a precise explanation for the term "stephead." If there is a particular origin, context, or industry where this word is commonly used, providing that information would aid in constructing a more accurate definition.