Meaning of THIN in English
■ adjective ( ~ner , ~nest )
1》 having opposite surfaces or sides relatively close together.
↘(of a garment or similar item) made of light material.
↘(of a garment or fabric) having become less thick as a result of wear.
2》 having little flesh or fat on the body.
3》 having few parts or members relative to the area covered or filled; sparse.
↘not dense or heavy: the ~ air of the mountains.
4》 containing much liquid and not much solid substance.
5》 (of a sound) faint and high-pitched.
↘(of a smile) weak and forced.
6》 lacking substance or quality; inadequate or weak: the evidence is rather ~.
■ adverb with little thickness.
■ verb ( ~s , ~ning , ~ned )
1》 make or become less thick.
2》 remove some plants from (a row or area) to allow the others more room to grow.
3》 Golf hit (a ball) above its centre.
be ~ on the ground see ground 1 .
have a ~ time Brit. informal have a miserable or uncomfortable time.
~ air used to refer to the state of being invisible or non-existent.
the ~ blue line informal the police.
OE thynne , of Gmc origin.
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004