v. & n.
v.tr. 1 (usu. foll. by in, into, between, etc.) place, fit, or thrust (a thing) into another. 2 (usu. foll. by in, into) introduce (a letter, word, article, advertisement, etc.) into a newspaper etc. 3 (as inserted adj.) Anat. etc. (of a muscle etc.) attached (at a specific point).
n. something inserted, e.g. a loose page in a magazine, a piece of cloth in a garment, a shot in a cinema film. insertable adj. inserter n.
[ L inserere (as IN-(2), serere sert- join) ]