Basic Guidelines For English Spellings
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A young, stunted, or decayed evergreen tree (chiefly fir), often cut for firewood; a stick, branch, or stump of this.
Late 19th century. Apparently from Irish starragán small projection, obstacle, obstruction from starr projection, stump (of unknown origin) + an element of uncertain origin (probably a suffix) + -án, suffix forming diminutives.