from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun The act of holding down.
- noun A limit or restraint.
- noun Something, such as a clamp, used to hold an object in place.
from The Century Dictionary.
- noun A device to prevent a machine or piece of apparatus from jumping or shaking: as, the hold-down of a saw-table.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a limitation or constraint
Sorry, no etymologies found.
But whatever the means chosen to hold-down demand for US immigration, the regulations will need to be enforced impartially (as seems obvious to me).
They regularly do hold-down firings of full stages and full flight vehicles.
I thought many things that hot summer morning of 40 years ago, standing at the then – Cape Kennedy press site, staring at the Apollo Saturn vehicle some 3 miles distant, listening to the quasi-Gregorian countdown chant of "minus 10 seconds, 9, 8 …" until, finally, the powerful first-stage rocket engines had built up enough thrust to pop open the big rocket's hold-down clamps and it began rising slowly, ponderously, into the blue sky.
But make no mistake: This hold-down of retail prices is a subsidy to energy consumers that is hidden in the government's budget.
In reality no astronaut has ever screamed, “For God and Country!” when the hold-down bolts blew…at least not on their rookie mission.
Every one of us rookies in that room, regardless of age or title, were classless peons and we would remain so until that glorious day when the hold-down bolts were blown and our ride began.
Another shuttle near miss occurred on STS-112 when a circuit failure resulted in only one set of the hold-down bolt initiators firing at liftoff.
Generating more than 6 million pounds of thrust, they certainly had the muscle to rip out the hold-down bolts and destroy the vehicle in the process.
Guy and Shep had earned their wings as we all had…at the instant the hold-down bolts had blown.
When she was once again vertical, the SRB and hold-down bolt fire commands were issued.