I’ll draw a rough map from your house to mine and email it to you.
An abbreviation version of a diagram isn't the completed diagram, nor is it one you spend a lot of time on. It's the abbreviated version, so it's more like a rough sketch.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.