Coccyx
Definition 1 of 1
Pro Tip 1/3
Location Specificity
The coccyx is specifically at the very base of the spine, not elsewhere. My lower back hurts, but it's not my coccyx; it's higher up.
Pro Tip 2/3
Injury Reference
Coccyx is often mentioned in the context of injuries or discomfort. After slipping on ice, I ended up with a sore coccyx.
Pro Tip 3/3
Evolutionary Relic
The coccyx is a vestigial structure, once a tail in ancestors. Humans have a coccyx, indicating our evolutionary past.