  Given a foliation, there is a well-known notion of holonomy, which can be
understood as an action that differentiates to the Bott connection on the
normal bundle. We present an analog notion for Lie subalgebroids, consisting of
an effective action of the minimal integration of the Lie subalgebroid. In the
special case of Lie subalgebras, the action is described explicitly in terms of
the conjugation action. The construction extends to singular subalgebroids.
