It cud be Iceberg but i think its probably icicle! technically that's not 7 l;etters but it sounds betta that mooo!
icicles
chilled
areoles
yelling
KeepingKnelledKeelingKillersKingpinKnowing
That's an unusual question.
zoology
Primper.
crinkle
egghead
firepitfirefly
Certain