睡过头

• 目(eye)RADICAL
• 垂(droop; hang down)PHONO-SEMANTIC

Eyes drooping down is when you feel sleepy.

• 辶(step; move)RADICAL
• 寸(inch; unit of measurement)PHONETIC

One small step of the foot gets you across and past that place.

• 大(large; big)RADICAL
• ⺀(two dots indicating hair; top of head)ASSOCIATIVE

The head is the largest and most prominent part on the human body.