What does the cryptic crossword clue "Dine out and get drunk, rendered speechless (6,4)" mean?

The wordplay uses an anagram. anagram of DINE + OUT + GET = TONGUETIED The answer is TONGUETIED.

Dine out and get drunk, rendered speechless (6,4)

Daily Mail Cryptic #16337 | 13 Down | 2020-06-15 flower