slat
Slat (noun) means a narrow, thin strip or bar made of wood (a lath), metal, or plastic.
Etymology
This word came from Middle English slatte, sklatte, sklat, sclat, from Old French esclat (“piece broken or split off, shiver, splinter”), from Old French esclater (“to split, burst”), from Frankish *slaitijan (“to split, break”), from Proto-Germanic *slītaną (“to rend, split”). It is a doublet of slate and éclat.