You can define a word using this way on most apps. (I just discovered this today)
I am in my text messages & want to know what the word haha means.
I double click on the word I want to know. In this case the button that you want did not pop up, so double click the word again.
After I double tapped it again, the button I want popped up! Click the arrow pointing to the right.
It will say define, click on define.
There your definition will pop up! Easy and fast! You don't have to download another dictionary app or go and get your dictionary if you don't know a word!:)
Thanks for reading my guide:) its my first one!
The creator of this guide has not included tools