in
1.
to absorb sth into the body, for example by breathing or swallowing :
Fish take in oxygen through their gills.
—related noun intake
2.
to make a piece of clothing narrower or tighter
OPP let out
3.
[ no passive ] to include or cover sth :
The tour takes in six European capitals.
4.
[ no passive ] to go to see or visit sth such as a film / movie :
I generally take in a show when I'm in New York.
5.
to take notice of sth with your eyes :
He took in every detail of her appearance.
6.
to understand or remember sth that you hear or read :
Halfway through the chapter I realized I hadn't taken anything in.