頭

unkempt hair

deflection (gunnery)

Surgery

craniotomy

Sumo

highest ranked wrestler in a stable

Risso's dolphin (Grampus griseus); grampus

Archeology

projectile point; point

Siebold's dragonfly (Anotogaster sieboldii); jumbo dragonfly

bald-headed

larger whales of family Delphinidae (esp. the pilot whales or blackfish)

front of the head

The component 幺 as in the left of 幻

top component of the kanji "thread" radical

spoken language (as opposed to literary)

kanji "dotted tent" radical (radical 105)

group leader

head voice (singing, phonics); head tone

nailhead

click beetle; skipjack (beetle of family Elateridae)

windflower; anemone

white-haired old man

grey starling (gray)

Food, cooking

thinly sliced salmon head cartilage and daikon seasoned with vinegar

Mahjong

winning hand consisting only of terminal and honor tiles

Buddhism

Sanzu River (Japanese Buddhist equivalent of the River Styx); River of Three Crossings

Anatomy

bulbus glandis; knot (of a canid penis)

love-lies-bleeding (Amaranthus caudatus); tassel flower; velvet flower; foxtail amaranth; Inca wheat

Medicine

brachycephaly; flat head syndrome