to put or thrust (something) in through an opening
Insert a coin into the slot
to introduce (something) into the body of something, e.g. text
She decided to insert an advertisement in the local paper
to set (something) into a position between two parts, e.g. by sewing it
technical said of a muscle: to be attached to a specified part
muscles inserting on bone
inserter noun
[Latin insertus, past part. of inserere to join in, from in-2 + serere to join]