money spider 
noun
A very small shiny black spider which is supposed to bring financial luck.
- Family Linyphiidae.
- When we were in the stalls I saw this money spider coming down my horse's neck.
- I used to be scared of pretty much all spiders (with the exceptions of money spiders, and those odd little red things about the size of a speck of dust).
- riding block
- riding cable
- riding charges
- riding clerk
- riding cloth
- riding coat
- riding crop
- riding days
- riding establishment
- riding exercise
- riding gear
- riding groom
- riding habit
- riding hood
- riding house
- riding light
- riding master
- riding officer
- riding rhyme
- riding rock
- riding rod
- riding sail
- riding school
- riding scope
- riding stick