Meaning

noun the process of taking food into the body through the mouth (as by eating)

noun an opening through which fluid is admitted to a tube or container

noun the act of inhaling; the drawing in of air (or other gases) as in breathing

originFrom English dialectal (Northern England/Scotland), deverbal of take in, equivalent to in- + take. More at in-, take.

Etymology from Wiktionary, CC BY-SA 3.0