Where does “drisiúr” come from?

drisiúr (Irish) comes from Middle English dressour, from Old French drecëur, from Old French drecier, from Vulgar Latin directiare, from Latin dīrectus, from Latin dīrigō, from Latin dis-, from Latin calceus — small stone, pebble; gravel, rubble.

Ancestry of “drisiúr”, step by step

Step	Language	Word	Meaning
1	Middle English	dressour	sideboard piece of kitchen furniture
2	Old French	drecëur	dresser, large item of furniture
3	Old French	drecier	to stand up; to get on one's feet
4	Vulgar Latin	directiare	—
5	Latin	dīrectus	laid straight, arranged in lines, having been arranged in lines
6	Latin	dīrigō	to lay straight; arrange in lines (especially in military contexts)
7	Latin	dis-	asunder, apart, in two; reversal, removal;...
8	Latin	calceus	shoe
9	Latin	calx	limestone; chalk; the finish line
10	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

Every word from Ancient Greek χάλιξ →Every word from Latin dis- →Every word from Latin calx →