[countable, usually plural] a plan or preparation that you make so that something can happen. Travel and accommodation arrangements have been finalized.

a plan or preparation that you make so that something can happen; travel arrangements arrangement for something; I'll make arrangements for you to be met at ...

There are eight meanings listed in OED's entry for the noun arrangement. See 'Meaning & use' for definitions, usage, and quotation evidence.

[transitive, intransitive] to plan or organize something in advance. arrange something The party was arranged quickly. Can I arrange an appointment for ...

2[transitive] arrange something to put something in a particular order; to make something neat or attractive The books are arranged alphabetically by author.

an agreement between two people or groups about how something happens or will happen. come to an arrangement I'm sure we can come to an arrangement.

arrangement fee, n. meanings, etymology, pronunciation and more in the Oxford English Dictionary.

a person who arranges something; the arranger of a loan/mortgage. See arranger in the Oxford Advanced Learner's Dictionary.

noun /ˈflaʊər əreɪndʒɪŋ/ /ˈflaʊər əreɪndʒɪŋ/ [uncountable] the art of arranging cut flowers in an attractive way.

an agreement between two people or groups: We have an arrangement whereby we share the childcare. Viewing is by prior arrangement.