Pronunciation: [dˈɪdst ðə tˈɒp ɒv jɔː hˈɛd] (IPA) 
Correct spelling for the English word "didst the top of your head" is [dˈɪdst ðə tˈɒp ɒv jɔː hˈɛd], [dˈɪdst ðə tˈɒp ɒv jɔː hˈɛd], [d_ˈɪ_d_s_t ð_ə t_ˈɒ_p ɒ_v j_ɔː h_ˈɛ_d] (IPA phonetic alphabet).
The phrase "didst the top of your head" is not a common expression used in contemporary English. However, by breaking down the words and analyzing their individual meanings and historical context, we can derive a nuanced definition.
The verb "didst" is an archaic second-person singular past tense form of "do," specifically used in older forms of English such as Shakespearean language or biblical texts. It signifies an action carried out by the second-person subject, which in this case would be "you."
"The top" refers to the highest or uppermost part of something, often used to describe physical locations or positions. In the context of "didst the top," it suggests an action performed on or to the highest point of a person or object.
"Your head" refers to the anatomical part of the body, commonly interpreted as the uppermost portion of the human body that houses the brain and sensory organs. In this sense, "your head" specifically addresses the head of the subject.
Considering these definitions, "didst the top of your head" can be interpreted as an archaic phrase calling attention to an action performed on or to the uppermost part of an individual's head. The exact nature of the action is not specified by the phrase alone.
