Idioms
It is a word to mean the foam or bubbles on top of a carbonated drink like a beer or cola.
What is a head (of beer).
This is the most popular sport in the world.
What is soccer or football.
PIN For example, I typed my PIN in the ATM to receive money.
What is a Personal Identification (I.D.) Number.
This is used to cut or carve down trees or a useful tool for firefighters.
What is an axe/ax.
This is what you call a man whose wife is dead.
What is a widower.