| spelunk |
to explore or investigate caves. |
| spelunker |
one who explores caves as a hobby or studies them as a profession. |
| spend |
to disburse (money or other resources). [4 definitions] |
| spendable |
available to be spent. |
| spender |
one who spends, esp. one known to spend large sums of money. |
| spending |
the money spent by an individual or organization, or the manner in which it is spent. |
| spending money |
cash for small personal expenses. |
| spendthrift |
one who is extravagant or wasteful with money; squanderer. [2 definitions] |
| spent |
past tense and past participle of spend. [3 definitions] |
| -sperm |
seed. |
| sperm1 |
a male animal's reproductive cell; spermatozoon. [2 definitions] |
| sperm2 |
a white waxy solid obtained from the oil of the sperm whale's head, and used in cosmetics, ointments, and candles; spermaceti. [2 definitions] |
| spermaceti |
a white waxy substance obtained from oil in the head of a sperm whale, used in candles, cosmetics, and ointments. |
| -spermal |
see -spermous. |
| spermatic |
of, pertaining to, or like sperm or sperm cells; seminal. [2 definitions] |
| spermato- |
seed; sperm. |
| spermatophore |
a compact mass of spermatozoa produced by males of certain animal species, such as salamanders and arthropods, that is transferred to the female during mating. |
| spermatophyte |
any plant that bears seeds. |
| spermatozoon |
an animal's mature male reproductive cell, usu. propelled by a moving tail. |
| sperm oil |
a lubricating oil that is obtained from sperm whales. |
| -spermous |
having (such or so many) seeds; -spermal. |