female deer, doe
麀 centers on a female deer, specifically a doe. The meaning is narrow and concrete, with no major abstract extensions.
麀 combines 鹿 (deer) with 匕, which likely acts as a distinguishing mark to specify the female deer. The exact historical development of the inner component is uncertain.
The deer enclosure 鹿 surrounds a small 匕, like a marker pointing to the female of the species. Imagine a doe with a special tag on her ear: 麀 is a female deer.
For ユウ, picture a female deer saying 'you' to her fawn: you -> ユウ, and the doe calls out softly.