If a group of people descend on a place or person, they arrive, usually without warning or without being invited:

If people in authority, such as the police, cordon off a building or area, they put something around it in order to stop people from entering it:

to help someone to work or operate normally through a difficult period, usually by lending them money:

to make someone provide details about something or make a decision about something:

to take a risk that something will happen:

to speak or write about something in detail or in more detail:

to speak or write about something in detail or in more detail:

having formally agreed to marry:

to risk money by buying or supporting something, in the hope of making or winning more money:

to force or persuade someone to give you something:

to try to do something difficult or dangerous:

to be similar to, and make someone think of, something or someone else:

to not tell someone about something:

to come from something:

to cost someone a large amount of money:

to quickly drink something, especially a lot of alcohol:

to stop someone doing or wanting something bad:

to help or make life better for someone by taking something unpleasant away from them:

to discover that someone has done something wrong:

to touch someone sexually, especially someone you do not know, for your own excitement: