The heel bone; the largest bone in the foot that supports your weight when you stand or walk.
From Latin calcaneus, derived from calx meaning 'heel,' a term used since Roman times to describe this prominent foot bone.
Your calcaneus is actually one of the strongest bones in your body because it has to absorb all the impact of walking and running—in fact, the Achilles tendon attaches directly to it, making it crucial for jumping and sprinting.
Complete word intelligence in one call. Free tier — 50 lookups/day.