Ymddengys o'r enghreifftiau ohono ar y we mai enw yw hwn o'r ferf 'to drive' e.e. 'drive a shaft', 'drive a tunnel'.  Ystyr 6 yn GyrA = gyrru, turio, torri, agor
 
Claire
 
Mae Pennawd Cyf yn gwmni cyfyngedig wedi'i gofrestru yng Nghymru a Lloegr o dan y rhif cofrestru 4276774, a chyfeiriad y swyddfa gofrestredig yw 53 Heol yr Orsaf, Ystum Taf, Caerdydd, CF14 2FB.
 
Pennawd Cyf is a limited company registered in England and Wales under the number 4276774, and the address of the registered office is 53 Station Road, Llandaff North, Cardiff, CF14 2FB.
 

From: Discussion of Welsh language technical terminology and vocabulary [mailto:[log in to unmask]] On Behalf Of Huw Garan
Sent: 21 March 2007 13:02
To: [log in to unmask]
Subject: drivage

Yng nghyd-destun mwyngloddio: "Its drivage was commenced in the early 1600s under the supervision of Thomas Bushell..."
 
Oes syniad gan rywun?  Oes yna derm cydnabydddedig yn Gymraeg?
 
Diolch am bob goleuni
 
Hg

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