"Most top hole" is an informal phrase meaning "excellent" or "outstanding". The correct spelling for this phrase is "most top-hole". The first word "most" serves as an intensifier, and the second word "top-hole" is pronounced as /tɒpˈhəʊl/. The IPA transcription shows the stress on the first syllable "top" and the silent "e" at the end of "hole". This expression is commonly used in British English and may be unfamiliar to speakers of other forms of English.