Rough Sketch
Rough Map
noun, の adjective
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 or a rough map.
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.
あなたの家からうちまでの略図を書いて、メールでお送りします。
I’ll draw a rough map from your house to mine and email it to you.
あなたが書いた略図のメモをちょっと見せてもらえませんか?
Do you mind letting me look at the rough sketch memo you made?
略図を書いたのはいいんですが、略しすぎて自分でもよく分からなくなってしまいました。
I drew a rough sketch, but I omitted too much and now I can't understand it myself.