Is the word trying a verb?

Yes, "trying" is a verb. It's the present participle of the verb "to try".

Here are some examples of how it's used:

* She is trying to learn Spanish. (present continuous tense)

* He was trying to open the door. (past continuous tense)

* We are always trying our best. (present continuous tense)

Let me know if you have any other questions about verbs!