What does the cryptic crossword clue "Endlessly glib politician in No 11? (4)" mean?

The wordplay uses a deletion. LI (synonym="LI") + MP (synonym="politician") = LIMP The answer is LIMP.

Endlessly glib politician in No 11? (4)

Independent Cryptic #11595 | 23 Down | 2023-12-09 flower