凍
トウ, こお.る, こご.える, こご.る, い.てる, し.みる, こおり
frozen, congeal, refrigerate
JLPT2 G7 S10 F1284
As per
東
# (run through) +
氷
ice → ice running through a given spot → *frozen over* → *freeze*; *chill*.
[Full Kanji Etymology List]