1. "I want you to present about 5 of your definitions in your self-made dictionary to the class, then I will ask you about 4 or 5 other specific
letters and what you found. "
I think letters in the preceding sentences mean words, but I'd never seen "a letter" used as "a word". Is my guess right? Is this usage of "letter" often seen?
2. Is there a better way to say "Please handle it (the self-made dictionary) with gentleness, because it may easily fall apart"?
Thanks.