sow dragon's teeth

arm to the teeth

To equip thoroughly with weapons.

bare one's teeth

To show aggression.

bone in her teeth

(of a boat or ship) A prominent bow wave (as a result of high speed).

cast in someone's teeth

To accuse someone of something, or reproach them for it.

cut one's teeth

To begin; to gain early experience.

gnash one's teeth

To grind or strike the teeth together in anger, signaling extreme rage, frustration, pain, or ferocity.

grit one's teeth

To face up to a difficult or disagreeable situation and deal with it.

Hampsteads

[Cockney slang]teeth

via Hampstead Heath