This is the 110th most frequent Chinese word.
外
"Outside" or "external."
In this sentence, '外' signifies 'outside' and refers to a location beyond a certain boundary or area.
我家外面有一棵大树。
Outside my house, there is a big tree.
Here, '外' is part of '外来', meaning 'foreign' or 'from outside', indicating something originating from an external source.
这个菜的味道很特别，是外来的。
The taste of this dish is unique; it is foreign.
In this context, '外' combines with '海' to form '海外', meaning 'overseas' or 'abroad', emphasizing a geographical externality.