If you dwell on something, especially something unpleasant, you think, speak, or write about it a lot or for quite a long time. I'd rather not dwell on the past
come back to; "Don't dwell on the past"; "She is always harping on the same old things"
In a petrol engine, the period of time the ignition points are closed to let current flow through the ignition coil in between each spark. This is measured as an angle in degrees around the camshaft in the distributor which controls the points, for example in a 4-cylinder engine it might be 55° (spark at 90° intervals, points closed for 55° between each)
The time for which the hot tool is impressed in the leather while gold or blind tooling
If you dwell somewhere, you live there. They are concerned for the fate of the forest and the Indians who dwell in it = live see also dwelling. to live in a particular place