To fail to keep up (the pace), to fall behind
To cover (for example, pipes) with felt strips or similar material (referring to a time lag effect in thermal transfer)
To transport as a punishment for crime.
To cause to lag; to slacken.
The covering of something with strips of felt, wood etc, either as insulation or for protection.
The material so used.
A prison sentence.
Falling behind, not keeping up the pace
Occurring after; indicating the later phase of