A noun for “wound” derived from the root ᴹ√SKAR (Ety/SKAR). Apparently the initial [sk-] became syllabic [ṣk-], which then became [esk-]. Afterwards the [[ilk|[esk] became [esg]]].
Doriathrin
esgar
noun. reed-bed
esgar
noun. wound
There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.
Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.
A noun for “reed-bed”, apparently an elaboration of Ilk. esg “reed” (Ety/ESEK). In a hastily written entry in The Etymologies, a similar form esgar was glossed “shore” as a derivative of the root ᴹ√SKAR, but with no language specified (EtyAC/SKAR²). If it was Ilkorin, it probably underwent the same development as esgar “wound”. Both these words appeared to have been coined to explain the name of the town Esgaroth from the Hobbit.