[ 'sɛlvɪdʒ ]
( chiefly N. Amer. also selvage )
■ noun
1》 an edge produced on woven fabric during manufacture that prevents it from unravelling.
2》 Geology a zone of altered rock at the edge of a rock mass.
Origin
ME: from an alt. of self + edge , on the pattern of early mod. Du. selfegghe .