lockoff

Noun

lockoff (plural lockoffs)

1. Any of various mechanisms that prevent a device or circuit from operating under certain circumstances, typically as a safety feature.
   • A highly desirable feature is an atmospheric lockoff which tends to close the fuel line to the carburetor tighter as the pressure of the gas behind the valve increases.1953, Society of Automotive Engineers, SAE Transactions - Volume 61, page 138
   • Complex equipment may require that the movable members be in a particular physical position prior to actuation of power lockoff.1980, Frank E. McElroy, Accident Prevention Manual for Industrial Operations, page 415
2. A lockdown of part of a facility.
   • On my way I got caught in a "lockoff" and security said nobody could move. When I told them it was an emergency, they just said that was too bad — it was a "lockoff" and I ought to understand the rules.1972, Charles R. Tittle, Society of Subordinates: Inmate Organization in a Narcotic Hospital, page 48
3. The act of fixing a ground anchor in place at a specific tension calculated to accommodate the expected load. Also, the tension at which the ground anchor has been fixed.
   • The amount of load locked into a tie depends upon the earth pressures and their distributions assumed for the wall . The following recommended lockoff loads are intended to serve as a guideline for use.1975, United States. Federal Highway Administration. Offices of Research and Development, Report No. FHWA-RD, page 265
   • Measured lockoff loads varied significantly at each site , although the same jack and crew were used to install tiebacks at the Cullen Center and First City sites.1989, Journal of Geotechnical Engineering - Volume 115, page 536
4. A device for securing a rope, strap, or cable at a particular level of tension.
   • The acceptance of lockoff has opened up new deck layout possibilities where winch placement and use can be made more flexible.1979, Anne Madden, More Sail Trim, page 236
   • If you will be moving around with your hands off the rope while you are tied off, further secure the lockoff by tying an overhand knot or two half hitches aroound the standing part of the rope with a bight from the running part of the rope.2001, Dennis Davis, National Tree Climbing Guide, page 66
5. The act of pulling down on a hold with one arm until the arm is fully bent at the elbow and using that arm to support one's weight.
   • Start with your arm and shoulder fully extended, then smoothly pull the handle down into a full lockoff.2003, Will Gadd, Ice & Mixed Climbing, page 212
   • The stronger your lockoff strength (holding your arm in that position), the farther you can reach and the easier long, static moves will feel. If you're a shorter climber, lockoff strength becomes integral to progressing through the grades.2018, Julie Ellison, Climb to Fitness, page 43
6. A type of shot in which the camera is fixed to a mount and unable to move.
   • A shot in which the camera changes position, via a pan, dolly, truck, crane, and/or boom, during the filming of aciton. Opposite of a lockoff shot.2001, Karen Goulekas, Visual Effects in a Digital World, page 325
   • In my experience, a completely static shot is more noticeable than a shot that makes subtle adjustments for things like headroom, which is essentially what you're talking about. I think most of the time those slight adjustments are needed to keep a shot properly composed, but when you do do a...2008 October 20, Brad Grimmett, “Operated camera vs. locked off shots”, in cinematography.com
7. A timeshare that allows a section to be sealed off from the rest of the unit and rented separately.
   • Living in a lockoff is fine for people who want to be alone together, except when they go out to eat.1988 October, A.R., “Bedspeak”, in Ski, volume 53, number 2, page 178
   • Hillside villas will have an eight-person sleeping capacity and lockoff capability , with a second kitchen and sitting room adjoining the second bedroom . "1995, Vacation Industry Review, page 21