–verb (used with object)
1. To make slow; delay the development or progress of (an action, process, etc.); hinder or impede.
–verb (used without object)
2. To be delayed.
3. A slowing down, diminution, or hindrance, as in a machine.
4. Slang: Disparaging.
a. Mentally retarded person.
b. A person who is stupid, obtuse, or ineffective in some way: a hopeless social retard.
5. Automotive, Machinery. An adjustment made in the setting of the distributor of an internal-combustion engine so that the spark for ignition in each cylinder is generated later in the cycle.

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