The cuneiform sign ú is a common-use sign of the Amarna letters, the Epic of Gilgamesh, and other cuneiform texts (for example Hittite texts).
It has a secondary sub-use in the Epic of Gilgamesh for šam.
[1] Linguistically, it has the alphabetical usage in texts for u, but can replace any of the four vowels, so also used for a, or e, or i.
[1] Ú is logogram, for Akkadian "tullal", a soapwort.
The following words use the syllabic šam as the first syllable in the word entries under š in the glossary.