rocker

The cradle-rockers had done hard duty for so many years, under the weight of so many children, on that flagstone floor, that they were worn nearly flat, in consequence of which a huge jerk accompanied each swing of the cot, flinging the baby from side to side like a weaver's shuttle, as Mrs Durbeyfield, excited by her song, trod the rocker with all the spring that was left in her after a long day's seething in the suds.

All modern surfboards share a similar rocker design — Bruce Jones https://web.archive.org/web/20051212041317/http://www.brucejones.com/longboar.htm

Like the editors of other Elamite texts, I omit the diacritic rocker from h in Elamite and from H in logograms in Elamite texts. I retain the rocker in ḫ and Ḫ in Sumerian and Akkadian.

"Girls & Boys" is […] also a tart, sneering rocker, full of ingenious musical gestures […]

It was I, sir, said the rocker, who had the honour, some thirty years since, to attend on your highness in your infancy.

Cadet Sergeant First Class: 3 Chevrons and 2 rockers. Cadet Master Sergeant: 3 Chevrons and 3 rockers. Cadet First Sergeant: 3 Chevrons, 3 rockers with a diamond inset.