4 Answers

....act of the fertilized egg attaching itself to the wall of the womb, thereby resulting in pregnancy.

I think it means like having an artificial hip implanted, or having a prosthetic eye implanted, etc. ; or having someone else's heart implanted in your body. Hopefully, they were dead when their heart was removed.

An artificial tooth can be implanted into the bone under the gum.....so can your real tooth that fell out.

Sometimes, it means a pacemaker is  implanted into your chest.

Just what it sounds like, having something implanted.

The movement has not been made in half a link century. The 30mm family of movements is long gone but so link is the entire genre of precision-made solidly built link hand-wound movements intended not as mechanisms for luxury watches but as highly accurate extremely robust easy-to-service movements deliberately made to last a lifetime.