Meaning : Rock fragments and pebbles.

Synonyms : crushed rock

Meaning : Cause annoyance in. Disturb, especially by minor irritations.

Example : Mosquitoes buzzing in my ear really bothers me.
It irritates me that she never closes the door after she leaves.

Synonyms : annoy, bother, chafe, devil, get at, get to, irritate, nark, nettle, rag, rile, vex

Meaning : Cover with gravel.

Example : We gravelled the driveway.

Meaning : Be a mystery or bewildering to.

Example : This beats me!.
Got me--I don't know the answer!.
A vexing problem.
This question really stuck me.

Synonyms : amaze, baffle, beat, bewilder, dumbfound, flummox, get, mystify, nonplus, perplex, pose, puzzle, stick, stupefy, vex