This is the 10453rd most frequent French word.
lapin
Rabbit.
The word 'lapin' in this sentence refers to a physical rabbit, as an animal that one can observe.
J'ai vu un lapin dans le jardin.
I saw a rabbit in the garden.
Here, 'poser un lapin' is an idiomatic expression in French meaning 'to stand someone up' or fail to show up for a meeting or date.
Elle a posé un lapin à son rendez-vous.
She stood someone up for her appointment.
In this example, 'lapin' refers to the meat of a rabbit used in culinary contexts.