Definitions
1.verbTo fail to keep up (the pace), to fall behind
2.verbTo cover (for example, pipes) with felt strips or similar material (referring to a time lag effect in thermal transfer)
3.verbTo transport as a punishment for crime.
4.verbTo cause to lag; to slacken.
5.nounThe covering of something with strips of felt, wood etc, either as insulation or for protection.
6.nounThe material so used.
7.nounA prison sentence.
8.adjectiveFalling behind, not keeping up the pace
9.adjectiveOccurring after; indicating the later phase of