expression
save me some; put some aside for me
Casual, colloquial contraction of 取っておいて (from 取っておく). Used when asking someone to set aside a portion of something (food, goods, etc.) for the speaker.
See also: 取っておく (とっておく)
そのケーキ、とっといて！
Save me some of that cake!
明日の分もとっといてくれる？
Can you put some aside for me for tomorrow too?