What does the French word Écris mean?

écris is a form of the verb "écrire", to write.

j'écris (1st person singular, present tense) I write, I am writing;

tu écris (2nd person singular, present tense) : you write / are writing;

écris ! (imperative mood): write!
write. (it's the je and tu form)

to write = écrire