Messenger: I cut the bonds that tied your ankles together.
Oedipus: I have had the mark as long as I can remember.
Messenger: That was why you were given the name you bear.
-Oedipus Rex ln1034-6
I think -pus means “foot” (-pod as in gastropod or pseudopod means “foot”). That leaves Oedi-. Little help?
IICR He was club-footed, which is why his father didn’t want him (in addition to that annoying prophecy), so he tied him to a board and left him to die of exposure soon after birth. Some kind-hearted villiager/serf/peasant/herder(which ever) found him and adopted him after that.
Your foot bends downward and in. It’s usually caused by a misalignment of bones in the foot, and now can be corrected with splints or surgery. Here’s a picture of a baby girl with a club foot.
Okay, I pulled out the World Book Enclyclopedia, and it says Laius left his son Oedipus to die on a mountainside because the oracle said the boy would kill him. He pierced Oedipus’ feet with a spike. Polybus found the child, adopted him as his own and named him Oedipus (swell foot) because his feet were swollen from the injury.