sill stiffener
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stiffener — An angle, T bar channel, built up section etc, used to stiffen plating of a bulkhead, etc. Also see sill stiffener … Dictionary of automotive terms
support — I (New American Roget s College Thesaurus) Maintenance Nouns 1. (financial support) support, maintenance, upkeep, sustenance. See aid. 2. (foundation) ground, foundation, groundwork, substratum, base, basis; terra firma; purchase, grip, footing,… … English dictionary for students