| firs | battle in World War I (1914) |
|---|---|
| firs | a self-caused agent that is the cause of all things |
| firs | the most expensive accommodations on a ship or train or plane |
| firs | the highest rank in a classification |
| firs | mail that includes letters and postcards and packages sealed against inspection |
| firs | the child of your aunt or uncle |
| firs | a collective term for numerous olfactory filaments in the nasal mucosa |
| firs | a Crusade from 1096 to 1099 |
| firs | the result of mathematical differentiation |
| firs | English general considered one of the greatest generals in history (1650-1722) |
| firs | British general and statesman |
| firs | British field marshal (1850-1916) |