What does "announcement" mean?

1. (the act of informing) the act of telling people about something officially. 2. (a spoken or written message) a short piece of writing or a spoken message that gives information.

Is it correct to say "The manager made an announcement for the new rules."?

No — say "The manager made an announcement about the new rules.". Use 'about' or 'of' to describe the subject of an announcement, rather than 'for'.

announcement

US //əˈnaʊnsmənt// UK //ɐnˈaʊnsmənt// an·nounce·ment

1 the act of informing (n.)
B1 Intermediate

the act of telling people about something officially.

the formal act of making something known publicly or officially.

Example

The headteacher made an announcement about the school trip during the morning assembly.

Example

The sudden announcement of the CEO's resignation sent shockwaves through the financial markets, causing an immediate dip in share prices.
- secret
- silence
Pitfall

The manager made an announcement for the new rules.

The manager made an announcement about the new rules.

Use 'about' or 'of' to describe the subject of an announcement, rather than 'for'.
2 a spoken or written message (n.)
B1 Intermediate

a short piece of writing or a spoken message that gives information.

a specific piece of information or a formal statement communicated through a medium such as a loudspeaker or a newspaper.

Example

I missed the train because I didn't hear the announcement about the platform change.

Example

Automated station announcements were broadcast every ten minutes to ensure passengers remained informed about the ongoing signal failures.

Origin

From Middle French annoncement. By surface analysis, announce + -ment.