Meaning of the word "a nod is as good as a wink to a blind horse" in English

What does "a nod is as good as a wink to a blind horse" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

a nod is as good as a wink to a blind horse

US /ə nɑːd ɪz æz ɡʊd æz ə wɪŋk tuː ə blaɪnd hɔːrs/
UK /ə nɒd ɪz æz ɡʊd æz ə wɪŋk tuː ə blaɪnd hɔːs/
"a nod is as good as a wink to a blind horse" picture

Idiom

used to say that a person who is already willing to understand or act does not need a long or detailed explanation

Example:
I didn't have to explain the plan; a nod is as good as a wink to a blind horse.
He knew exactly what I meant without me saying it; a nod is as good as a wink to a blind horse.