What does it mean if the midwife says at brim head engaged?

When a midwife says the "head is engaged at brim," it means that the baby's head has descended into the pelvic cavity and is positioned at the level of the pelvic inlet, also known as the brim of the pelvis. This engagement indicates that the baby is preparing for birth, as the head is aligned with the birth canal. It is an important sign that labor may be approaching or has begun, as the engagement often precedes dilation and contractions.