phrases involving the head

A set jaw

Determined, stubborn

“The president's jaw was set; he refused to listen to his advisors.”

A long face

Sad

“There were lots of long faces in the office when the summer bonuses were announced.”

A heads-up

Advance notice

“Mariko-san gave me a heads-up on the request for budget revisions.”

By an nose

Barely beat

“Last month's customer usage statistics show that we beat the competition by a nose.”Note: A term borrowed from horseracing; to win by a few inches.

In a blink of an eye

Without hesitation, instantly

“Keiko-san said she'd accept the job transfer to headquarters in the blink of an eye.”