Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • transitive verb To support from below, as with props, girders, or masonry.
  • transitive verb To give support or substance to.

from The Century Dictionary.

  • To pin or support underneath; place something under for support or foundation when a previous support is removed; underset; hence, figuratively, to support; prop.

from the GNU version of the Collaborative International Dictionary of English.

  • transitive verb To lay stones, masonry, etc., under, as the sills of a building, on which it is to rest.
  • transitive verb To support by some solid foundation; to place something underneath for support.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • verb transitive To support from below with props or masonry.
  • verb transitive, figuratively To give support to; to corroborate.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • verb support with evidence or authority or make more certain or confirm
  • verb support from beneath

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

under- +‎ pin

Support

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