Definition of groundling
noun
1a spectator or reader of inferior taste, such as a member of a theater audience who traditionally stood in the pit below the stage:Dante is not for groundlings[with reference to Shakespeare's Hamlet iii. ii. 11]
2a person on the ground as opposed to one in a spacecraft or aircraft.
3a fish that lives at the bottom of lakes and streams, especially a gudgeon or loach.
4a creeping or dwarf plant.