Sunday Times Cryptic Crossword 4274?

Question

2d Plans that are bibulous at first sight, about Indian city (8)

I just wondered if anyone has a full explanation?

I have DIAGRAMS - agra is the city, first sight is s but where does the dim come from?

Or am I just thick?!

Answer 1

All I can think of is that seeings bibulous is to do with being drunk, your sight would be dimmed?