scantling
Pronunciation: /ˈskantlɪŋ/
noun
- 1a timber beam of small cross section.
- the size to which a piece of timber or stone is measured and cut.

Origin:
early 16th century (denoting prescribed size, or a set of standard dimensions): alteration of obsolete scantillon (from Old French escantillon 'sample'), by association with the suffix -ling