Learn the French Word Le Sillage

The French word le sillage -- pronounced "see-yazh" -- means the wake of a boat, a slipstream, or a trail.

Ce bateau laisse un grand sillage. 
This boat leaves a big wake.

J'ai vu le sillage d'un avion hier.
I saw a plane's (vapor) trail yesterday.

Suivons le sillage de parfum.
Let's follow the scent of perfume.

Dans le sillage de qun
In someone's wake (literal and figurative)

marcher dans le sillage de qqun
to follow in someone's footsteps