Definition: Amuse + Amused + Amusing + Amusement

a‧muse

[transitive]

1 to make someone laugh or smile:

He made funny faces to amuse the children.

The question seemed to amuse him in some way.

it amuses somebody to do something

It amused me to think back to my life in London.

2 to make time pass in an enjoyable way, so that you do not get bored[= entertain]:

Doing jigsaws would amuse Amy for hours on end.

The kids amused themselves playing hide-and-seek.

a‧mused

1 if you are amused by something, you think it is funny and you smile or laugh

amused at/by

Ellen seemed amused by the whole situation.

I could see she was highly amused (=very amused).

The man looked a little amused.

He won't be very amused (=he will be annoyed) when he finds out what's happened to his garden.

an amused smile/look/expression etc

2

keep somebody amused

to entertain or interest someone for a long time so that they do not get bored:

There were puzzles and games to keep the children amused.

a‧mus‧ing

funny and entertaining:

I don't find his jokes at all amusing.

a highly amusing (=very amusing) film

an amusing story/anecdote/incident etc

The book is full of amusing stories about his childhood.

mildly/vaguely amusing (=a little amusing, but not very)

a mildly amusing spectacle

a‧muse‧ment

1 [uncountable] the feeling you have when you think something is funny

with/in amusement

Her eyes sparkled with amusement.

She looked at him in amusement.

Steve couldn't hide his amusement.

to somebody's amusement (=in a way that makes someone laugh or smile)

They were dancing and singing in the car, much to the amusementof passers-by.

The cats are a constant source of amusement to us.

2

amusements

[plural]

a) things that entertain you and make time pass in an enjoyable way:

childhood amusements

b) British English special machines or games that are intended to entertain people, for example at a fair:

The kids can ride on the amusements.

3 [uncountable] the process of getting or providing pleasure and enjoyment:

What do you do for amusement in this town?

definition source (with some modifications) via http://www.ldoceonline.com/