1. noun getting less thick, dense2. noun of hair3. noun HORT of trees, plants4. adjective 1 noun getting less thick, densetanú masc4 c m utanúchán masc1 c m uthe thinning of the bonestanú na gcnámhdue to the rapid thinning of the glaciertoisc go bhfuil an t-oighearshruth ag tanú go tapa2 noun of hairtanú masc4 c m uit delays the thinning of the hairmoillíonn sé tanú na gruaige3 noun HORT of trees, plantstanú masc4 c m utanúchán masc1 c m uthe vegetables benefit from thinningcabhraíonn an tanúchán leis na glasraí4 adjectiveatá ag éirí tanaíhe has thinning black hairtá gruaig dhubh air atá ag éirí tanaí