shelve (v.1)

1590s, "to overhang," also "to provide with shelves," probably a back-formation from shelves, plural of shelf (n.1). Meaning "put on a shelf" first recorded 1650s; metaphoric sense of "lay aside, dismiss" is from 1812. Related: Shelved; shelving.

shelve (v.2)

"to slope gradually," 1610s, from Middle English shelven "to slope," from shelfe "grassy slope," a word related to shelf (n.1). Related: Shelved; shelving.

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Definitions of shelve from WordNet

shelve (v.)
hold back to a later time;
Synonyms: postpone / prorogue / hold over / put over / table / set back / defer / remit / put off
shelve (v.)
place on a shelf;
shelve books