5ME ryvette < MFr rivet < river, to clinch < ?6
1 a metal bolt or pin with a head on one end, used to fasten plates or beams together by passing it through holes in them and then hammering down the plain end into a head so as to lock it in place
2 a similar device used to fasten or strengthen seams, as on work clothes
vt.
1 to fasten with a rivet or rivets
2 to hammer or spread the end of (a bolt, etc.) into a head, for fastening something
3 to fasten or secure firmly
4 to fix or hold (the eyes, attention, etc.) firmly
riv$[eter
n.

http://SacRivetHead.tribe.net