noun
Etymology: sound (I)
: a knot in lumber that is as hard as the surrounding wood and is so solid and free from decay that it will retain its place in the piece
noun
Etymology: sound (I)
: a knot in lumber that is as hard as the surrounding wood and is so solid and free from decay that it will retain its place in the piece
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012