[f. COG sb.2]
1. trans. To furnish (a wheel, etc.) with cogs.
1499. Promp. Parv. (Pynson), 85. Coggyn a mylle, scarioballo.
1523. Fitzherb., Surv., xl. But the cogge whele is a great helper if it be well pycked, well cogged and well ronged.
2. To stop (a wheel, etc.) by putting a stone, block of wood, etc., in front; to ‘scotch’ a cart-wheel on an incline to prevent the cart going back; to steady anything with a wedge. north. dial.
1635. Rutherford, Lett., li. (1862), I. 146. The Lord shall cog the rumbling wheels, or turn them.
1825–79. Jamieson, Cog, to place a stone, or a piece of wood, so as to prevent the wheel of a carriage from moving.
1880. Antrim & Down Gloss., Cog, to steady anything that is shaky by wedging it; to place a wedge under a cart-wheel to prevent the cart going down hill.
3. refl. To move (oneself along) by the aid of successive notches made to give footing.
1856. Kane, Arct. Expl., I. xxvii. 360. To make for the island by cogging himself forward with his jack-knife.
4. ‘To roll or bloom (ingots)’ (Raymond, Mining Gloss.).
