| tr.v.  in·sert·ed, in·sert·ing, in·serts  1.  To put or set into, between, or among: inserted the key in the lock; insert a shim between a door jamb and frame. See Synonyms at  introduce. 2.  To put or introduce into the body of something; interpolate: insert an illustration into a text. 3.  To place into an orbit, trajectory, or stream. 4.  To put into action: inserted a rookie into the lineup. n.  (ĭnsûrt′)  Something inserted or intended for insertion, as a picture or chart into written material. [Latin īnserere, īnsert- : in-, in; see  IN-2 + serere, to join; see  ser-2 in the Appendix of Indo-European roots.] in·serter n. | 
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