puncheon(redirected from Tertian (unit))
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Related to Tertian (unit): quartan
puncheon(pŭn`chən), plank or board made by hewing instead of sawing. American pioneers who could not procure the products of sawmills made much use of puncheons in their log buildings. The puncheons used for floors were split logs hewn smooth on the split side only.
1. A short, upright piece of timber in framing; a short post; an intermediate stud.
2. A split log or heavy slab with the face smoothed.
3. A short post used as a spacing support in temporary timbering around an excavation.