tæru

Tõru is a word of Estonian origin that refers to the acorn, the nut of the oak tree. It is the fruit of trees belonging to the genus Quercus, commonly known as oaks. Acorns are typically enclosed in a tough, leathery shell and have a cap at one end. They are an important food source for many animals, including squirrels, birds, and deer, and have also been utilized by humans throughout history.

In Estonian folklore and traditional practices, the acorn held some significance. It was sometimes associated with fertility and abundance. While not a primary staple food for humans in modern times, acorns were historically consumed, often after processing to remove tannins which can make them bitter and indigestible. This processing could involve boiling or leaching.

The term "tõru" is specific to the Estonian language and its cultural context. It distinguishes the oak nut from other types of nuts or seeds found in Estonia. The presence and abundance of oak trees directly influence the availability of tõru, making it a seasonal occurrence, typically found in autumn.