spa: umbral

Information
has URI	http://lexvo.org/id/term/spa/umbral

Meaning
means	(noun) the sill of a door; a horizontal piece of wood or stone that forms the bottom of a doorway and offers support when passing through a doorway doorstep, doorsill, threshold
means	(noun) structural member consisting of a continuous horizontal timber forming the lowest member of a framework or supporting structure sill
means	e/Sensory threshold