Don’t understand midwife jargon 🤨

Harpo

Can someone explain what engagement 4/5 means? I googled and got this;

(4/5 engaged means that 4/5 of the head is down in your pelvis.

4/5 palpable means that the midwife can feel 4/5 of the baby's head above your pelvis, so only 1/5 is engaged).

It doesn’t say palpable so does that mean she is in my pelvis? Maybe a silly question 🤷‍♀️