gnarl (EN)
verbo, substantivo

verbo “gnarl”

gnarl; he gnarls; past gnarled, part. gnarled; ger. gnarling
  1. retorcer
    The old tree's roots gnarled around the rocks.

substantivo “gnarl”

sg. gnarl, pl. gnarls
  1. (duro e torcido em uma árvore)
    The old oak tree had a large gnarl on its trunk where the branches twisted together.