head
The man whom the vicar was staring at bowed his head in embarrassment.
She clasped her hands tightly together and bowed her head.
They bowed their heads in a moment of silence.
I bowed my head to acknowledge the audience.
She bowed her head over her book again and took no further notice of me.

SMART Vocabulary: related words and phrases

Physical gestures of respect
bow
bow down
chest bump
curtsy
curtsy to someone
dap
dap someone up
doff
elbow bump
fistbump
genuflect
handshake
high five
kowtow
prostrate
prostration
salaam
salute
take a bow
vail