Where does “slat” come from?

slat (Middle English) comes from Old French esclate, from Old French esclater, from Frankish slaitan, from Proto-Germanic slaitijaną, from Proto-Germanic slītaną, from Proto-Indo-European sleyd-.

Ancestry of “slat”, step by step

Step	Language	Word	Meaning
1	Old French	esclate	—
2	Old French	esclater	to separate from, sunder out
3	Frankish	slaitan	to split, break
4	Proto-Germanic	slaitijaną	—
5	Proto-Germanic	slītaną	to tear apart
6	Proto-Indo-European	sleyd-	—

Every word from Proto-Indo-European sleyd- →Every word from Proto-Germanic slītaną →Every word from Proto-Germanic slaitijaną →