[ fas-uh-ning, fah-suh- ]
/ ˈfæs ə nɪŋ, ˈfɑ sə- /


something that fastens, as a lock or clasp.

Origin of fastening

Middle English word dating back to 1125–75; see origin at fasten, -ing1

Definition for fastening (2 of 2)


[ fas-uhn, fah-suhn ]
/ ˈfæs ən, ˈfɑ sən /

verb (used with object)

verb (used without object)

Origin of fasten

before 900; Middle English fastenen, Old English fæstnian; cognate with Old Norse fastna to betroth; akin to fast1

Related forms

re·fas·ten, verb (used with object)well-fas·tened, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for fastening

British Dictionary definitions for fastening (1 of 2)


/ (ˈfɑːsənɪŋ) /


something that fastens, such as a clasp or lock

British Dictionary definitions for fastening (2 of 2)


/ (ˈfɑːsən) /


Derived Forms

fastener, noun

Word Origin for fasten

Old English fæstnian; related to Old Norse fastna to pledge, Old High German fastinōn to make fast; see fast 1
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