To put a lid on (something).
A hermetically sealed top piece on a microchip such as the integrated heat spreader on a CPU.
In amateur radio, an incompetent operator.
A cap or hat.
One ounce of cannabis.
A restraint or control, as when "putting a lid" on something.
A kid (from the rhyming slang bin lid)
A bodyboard or bodyboarder.
The top or cover of a container.
A motorcyclist's crash helmet.
To separate (something that is wound up)
To undo something.
To relax; to chill out; to rest and become relieved of stress
To close out a position, especially a complicated position.
To be or become unwound; to be capable of being unwound or untwisted.
To analyse (a call stack) so as to generate a stack trace etc.
Any mechanism or operation that unwinds something.