What does "coarctate" mean?

Coarctate: To restrain; to confine. [Obs.] Ayliffe.

Additional senses

  1. 2.Pressed together; closely connected; -- applied to insects having the abdomen separated from the thorax only by a constriction. Coarctate pupa (Zoöl.), a pupa closely covered by the old larval skin, as in most Diptera.

Sources