Fetching details from the dictionary...
to fit (e.g. a pane into a frame); to set (e.g. a diamond); to inlay; to insert
to plug in (to a formula)
to entrap; to take (someone) in; to deceive; to trick
職人が窓枠にガラスを嵌め込んだ。
The craftsman fit the glass into the window frame.
この部品は力を入れて嵌め込まないと動かない。
This part won't work unless you press it firmly into place.
新しいレンズを丁寧に嵌め込んでいる。
I'm carefully fitting in the new lens.