[noun in-let, -lit; verb in-let, in-let]
See more synonyms for inlet on
  1. an indentation of a shoreline, usually long and narrow; small bay or arm.
  2. a narrow passage between islands.
  3. a place of admission; entrance.
  4. something put in or inserted.
verb (used with object), in·let, in·let·ting.
  1. to put in; insert.

Origin of inlet

Middle English word dating back to 1250–1300; see origin at in, let1
Can be confusedbay cove gulf inlet Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for inlet


noun (ˈɪnˌlɛt)
  1. a narrow inland opening of the coastline
  2. an entrance or opening
  3. the act of letting someone or something in
  4. something let in or inserted
    1. a passage, valve, or part through which a substance, esp a fluid, enters a device or machine
    2. (as modifier)an inlet valve
verb (ɪnˈlɛt) -lets, -letting or -let
  1. (tr) to insert or inlay
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

Word Origin and History for inlet

1570s, "narrow opening into a coast, arm of the sea," a special use of Middle English inleten "to let in" (c.1300), from in + let (v.). In this sense said by old sources to be originally a Kentish term.

Online Etymology Dictionary, © 2010 Douglas Harper

inlet in Medicine


[ĭnlĕt′, -lĭt]
  1. A passage leading into a cavity.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.