Noun
せんしゅう
先週は学校はお休みでした。
School was out last week.
大きくなったねー。先週はまだあんなに小さかったのに。
You sure have grown a lot! You were still tiny last week though.
先週出席した経済相互援助会議で、喋る犬にインタビューされたんだが、あいつは本当に嫌なやつだった。
I was interviewed by a talking dog about the Comecon convention I attended last week. He was so insulting.
The previous week was last week.
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.