脚后跟

• ⺼(meat; flesh; body)RADICAL
• 却(decline; refuse)PHONETIC

A foot is the fleshy part of the body that helps us step backward or forward.

• 口(mouth; door)RADICAL
• 后(behind; empress (figuratively—one who rules from behind))ASSOCIATIVE

A mouth giving orders from behind the golden throne is the authority of an empress.

• 足(foot; sole)RADICAL
• 艮(hard; stop)PHONO-SEMANTIC

The heel is the hard and solid part at the end of the foot that helps us stand firmly.