Lag \Lag\, v. i. [imp. & p. p. {Lagged}; p. pr. & vb. n.
{Lagging}.]
To walk or more slowly; to stay or fall behind; to linger or
loiter. "I shall not lag behind." --Milton.
Syn: To loiter; linger; saunter; delay; be tardy.
[1913 Webster]