Definitions:
with opposite surfaces or sides that are close or relatively close together

having little, or too little, flesh or fat on the body

having few parts or members relative to the area covered or filled; sparse

(of a liquid substance) not containing much solid; flowing freely

lacking substance or quality; weak or inadequate

with little thickness or depth

make or become less dense, crowded, or numerous

make or become smaller in thickness

hit (a ball) above its centre.