Limber \Lim"ber\ v. t. [imp. & p. p. {Limbered}
(l[i^]m"b[~e]rd); p. pr. & vb. n. {Limbering}.] (Mil.)
To attach to the limber; as, to limber a gun.
[1913 Webster]
{To limber up}, to change a gun carriage into a four-wheeled
vehicle by attaching the limber.
[1913 Webster]