A type of formwork which serves as a temporary structure during the construction of arches and bridges.
The process of moving something to a centre, normally before some other process.
Lack of means of subsistence; poverty; indigence; destitution.
A requirement for something; something needed.
To be obliged or required (to do something).
To be required; to be necessary.
To want strongly; to feel that one must have something.
To have an absolute requirement for.