Where does “housetop” come from?

Housetop derives from English house, from Middle English hus and the suffix -en, from Proto-Germanic hūsą, ultimately from Proto-Indo-European roots meaning to cover or enclose.

housetop (English): The roof of a house

Definitions

The roof of a house

Ancestry of “housetop”, step by step

Step	Language	Word	Meaning
1	English	top	The highest or uppermost part of something; A...
2	Middle English	top	The summit or top of something, especially a...
3	Old English	topp	—
4	Proto-West Germanic	*topp	—
5	Proto-Germanic	tuppaz	tuft, plait; top, summit
6	Proto-Indo-European	dumb-	tail, rod, staff, pole, penis; tail, rod, staff,...

Every word from Proto-Indo-European dumb- →

housetop — Etymology, Origin & Word History | Etymology Explorer