満杯 is read as まんぱい (mampai) and means full.
まんぱい
mampai
まんいん
full house
まんぞく
satisfying (an equation)
まんてん
perfect score
みたす
to fill (e.g. a cup)
まんめん
(wearing an expression) all over one's face
まんげつ
full moon
みちる
to wax (of the moon)
まんじょう
whole house
まんぷく
full stomach
まんき
expiration (of a term)
まんかい
full bloom (esp. of cherry blossom)
まんまん
full of