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buttress

[buh-tris] /ˈbʌ trɪs/
noun
1.
any external prop or support built to steady a structure by opposing its outward thrusts, especially a projecting support built into or against the outside of a masonry wall.
2.
any prop or support.
3.
a thing shaped like a buttress, as a tree trunk with a widening base.
4.
a bony or horny protuberance, especially on a horse's hoof.
verb (used with object)
5.
to support by a buttress; prop up.
6.
to give encouragement or support to (a person, plan, etc.).
Origin
1350-1400
1350-1400; Middle English butresOld French (arc) boterez thrusting (arch) nominative singular of boteret (accusative), equivalent to boter- abutment (perhaps < Germanic; see butt3) + -et -et
Related forms
buttressless, adjective
buttresslike, adjective
nonbuttressed, adjective
unbuttressed, adjective
Synonyms
6. encourage, hearten, support, inspirit, brace, back up, reinforce, shore up.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for un buttressed

buttress

/ˈbʌtrɪs/
noun
1.
Also called pier. a construction, usually of brick or stone, built to support a wall See also flying buttress
2.
any support or prop
3.
something shaped like a buttress, such as a projection from a mountainside
4.
either of the two pointed rear parts of a horse's hoof
verb (transitive)
5.
to support (a wall) with a buttress
6.
to support or sustain
Word Origin
C13: from Old French bouterez, short for ars bouterez thrusting arch, from bouter to thrust, butt³
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for un buttressed

buttress

n.

early 14c., from Old French (arc) botrez "flying buttress," apparently from bouter "to thrust against," of Frankish origin (cf. Old Norse bauta "to strike, beat"), from Proto-Germanic *butan, from PIE root *bhau- "to strike" (see butt (v.)).

v.

late 14c., literal and figurative, from buttress (n.). Related: Buttressed; buttressing.

Online Etymology Dictionary, © 2010 Douglas Harper
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