Roots/*streH-mn̥streH-mn̥“that which is spread, layer”Widely acceptedmaterialextensionSource of Latin strāmen, English straw, stratum, streamNominal of the spread root, yielding Latin strāmen (straw) and English straw, stratum, stream.Related Rootsbʰerdʰ-“to cut, split, separate”bʰerǵ-s-“to protect by enclosing”bʰreg-mn̥“that which breaks, fragment”deru-“tree, wood, to be firm”dʰeyǵʰ-mn̥-₂“wall, thing built from clay”dʰrew-“to be firm, to be solid”dóru“tree, wood, oak”doru-mn̥-“beam, timber, spear-shaft”related entrySee also: streH-mn etymology