slat(noun, verb) noun1. a thin strip (wood or metal)Similar word(s): splineDefinition categories: man–made, stripSentences with slat as a noun:- slats of a window blind verb1. equip or bar with slats- Slat the windowsDefinition categories: possession, furnish, provide, render, supply2. close the slats of (windows)Definition categories: contact, close, shut