The definition of the verbal phrase (tick off) doesn't list the sense you want, but if you look at just the verb itself, you'll see an entry for it under tick.:
1 : to mark with a written tick : CHECK —usually used with off
// ticked off each item in the list
2 : to mark, count, or announce by or as if by ticking beats
// a meter ticking off the cab fare
As a general rule, when looking up phrases like this, if you can't locate what you want from the entire phrase, look up the verb on its own, and then do a search for the additional word.
In this case, not finding it under tick off, I looked up tick and then searched for off. This let me find the entry.