Did you possibly mean one of these? sial, small
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“Similarly smial (or smile) ‘burrow’ is a likely form for a descendant of smygel, and represents wen the relationship of Hobbit tran to R. trahan.”
“Most notable were the names of days, months, and seasons; several other words of the same sort (such as mathom and smial) were also still in common use, while more were preserved in the place-names of Bree and the Shire.”
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vanishedone In Tolkien, a Hobbit-hole. Tucknorough.net: 'The word smial is derived from the Old English smygel meaning "retreat, burrow." The actual Hobbit word was trân.' Nov 1, 2008