| FOS | the branch of archeology that studies fossil organisms and related remains |
|---|---|
| FOS | (of limbs and feet) adapted for digging |
| FOS | foot adapted for digging as in moles |
| FOS | a burrowing mammal having limbs adapted for digging |
| FOS | United States songwriter whose songs embody the sentiment of the South before the American Civil War (1826-1864) |
| FOS | help develop, help grow |
| FOS | bring up under fosterage |
| FOS | promote the growth of |
| FOS | providing or receiving nurture or parental care though not related by blood or legal ties |
| FOS | a household in which an orphaned or delinquent child is placed (usually by a social-service agency) |
| FOS | your foster brother is a male who is not a son of your parents but who is raised by your parents |
| FOS | a child who is raised by foster parents |