write in

1. 1.

   cast a vote by inserting a name that does not appear on the ballot

   “Many voters wrote in the names of strangers”

   Broadervote
2. 2.

   write to an organization

   “Many listeners wrote in after the controversial radio program”

   Broaderwrite

Questions about write in

What does write in mean?

write in means "cast a vote by inserting a name that does not appear on the ballot". That is the primary sense; the word has 2 in total, listed in full on this page.

Is write in a common word?

write in is banded "Uncommon" — turns up in careful writing rather than conversation. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.