Lexical Definition

‎יְגַר שַׂהֲדוּתָא‎ Yᵉgar Sahădûwthâʼ (yegar' sah-had-oo-thaw') Jegar N:N--L
(Aramaic) from a word derived from an unused root (meaning to gather) and a derivation of a root corresponding to ‎שָׂהֵד‎; heap of the testimony

Jegar-Sahadutha.

1) the mound of stones raised as witness between Jacob and Laban, called by Jacob in Hebrew 'Galeed'

See Greek: βουνός

Brown-Driver-Briggs

[‎יְגַּר‎] noun [masculine] (stone-)heap (ᵑ7 id.; Syriac ; compare Ethiopic throw together, mound); — construct ‎שָֽׂהֲדוּתָא‎ ‎׳‎‎י‎ Gen 31:47 (= Hebrew ‎גַּלעֵֿד‎).

Brown-Driver-Briggs References

Book Refs
Genesis 31:47