Definition from macmillandictionary.com
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He slowly turned the key in the lock.
All the windows were fitted with locks.
Use a steering-wheel lock for your car.
Even on full lock I couldn’t get round the corner.
her flowing golden locks
Under the triple lock pensions guarantee, pensions will rise every year in line with earnings, prices or 2.5%, whichever is higher.
The PM pledged to keep the "triple lock" system, which ensures the state pension goes up by whichever is higher - inflation, wages or 2.5%.
David Cameron is to unveil a five-year "tax lock" as he pledges people will always be able to keep more of their money under the Tories.