The phrase "bottom rungs" refers to the lowest levels or positions in a hierarchy or social ladder. It suggests being at the starting point or having the least advancement or importance in a particular area.
Sentences with «bottom rungs»
Position rack in bottom rung of oven and preheat to 350 °F. (epicurious.com)
The film stuffs itself full of sitcom characters and the sort of situations that would get rejected from bottom rung TV dramas. (rottentomatoes.com)
You place the round bottom ring over your areola allowing your nipple to stick through a hole in the center. (verywellfamily.com)