英和和英

to cut one's hair

to make a great effort of the mind in order to understand or find the answer to a difficult question

to scratch one's head―（恥じてなら）―hang one's head for shame

to lower one's head

a white head

above the head

marginal notes

to take the tonsure

the head of a member of the Japanese nobility

a level head

He has a bad head

the function of the brain

to raise one's head―hold up one's head

I'm a bit out of it.

to break one's head

the nod of a head

to lay one's head on the pillow―recline one's head on the pillow

to give one's brain a rest

hit on the head

move one's head

Use your head!

twist one's head

to bow one's head―incline one's head

a hard head

to use one's head―do head-work―do intellectual work―exercise one's intellect

I feel out of it.

to rack one's brains―cudgel one's brains―worry （oneself）

I am going to have my hair cut.

hair just done up

to receive a blow on the head―（こっけいに言えば）―stop a blow with one's head