take in

[sky]

hear, usually without the knowledge of the speakers

[Antoinegap]

take in, also metaphorically

[gusepinax]

take up as if with a sponge

[Mendocky]

take into ones family

[Richarddok]

make (clothes) smaller

[Tanya Shivari]

To deceive; to hoodwink.

[Konrador 0]

To shorten (a garment) or make it smaller.

[juan98]

To absorb or comprehend.

[Tanya Shivari]

To receive into your home for the purpose of processing for a fee.

[Frankykap]

To attend a showing of.

[Faizan Zahid]

To take in has various meanings depending on the context:

1. Absorb or assimilate information, knowledge, or ideas: She was trying to take in all the details of the presentation.

2. Accept and provide home or accommodation: They decided to take in a foreign exchange student.

3. Perceive and comprehend ones surroundings through sight: He stopped for a moment to take in the stunning view.

4. To understand or believe something: It took a while for the news to be taken in.

5. Adjust a garment to make it narrower or tighter: She had to take in the dress because it was too loose.

So, the general definition could be to receive, absorb and/or comprehend something intellectually, visually or physically.