drop a line and drop a few lines; drop a note

drop (one) a few lines

To contact one, usually with a letter or note. I know you'll be busy enjoying yourself, but please, drop me a few lines on your trip. I'll drop you a few lines once I get settled in at school.
See also: drop, few, line

drop (one) a line

To contact someone, usually with a letter, note, or phone call. I know you'll be busy enjoying yourself, but please, drop me a line on your trip. I'll drop you a line once I get settled in at school.
See also: drop, line

drop (one) a note

To send one a letter or message. I always try to drop Janet a note around her birthday so that she knows I'm thinking of her.
See also: drop, note

drop someone a line and drop someone a few lines; drop someone a note

to write a letter or a note to someone. (The line refers to lines of writing.) I dropped Aunt Jane a line last Thanks giving. She usually drops me a few lines around the first of the year. Drop me a note when you get a chance.
See also: and, drop, few, line, note