1. (baseball) the person who plays the position of catcher
   - catcher 
2. (baseball) a fence or screen (as behind home plate) to prevent the ball from travelling out of the playing field 
3. A precaution in case of an emergency
   "he acted as a backstop in case anything went wrong"

1. Act as a backstop

Derived forms: backstopped, backstops, backstopping

Type of: fence, fencing, guard, infielder, play, precaution, safeguard

Encyclopedia: Backstop

• Stanton
• stanza
• stanzaic
• stapedectomy
• stapedial
• stapelia
• Stapelias asterias
• stapes
• staph
• Staphylaceae
• Staphylea
• Staphylinidae
• staphylococcal
• staphylococcal enterotoxin
• staphylococcal enterotoxin B
• staphylococcal infection
• staphylococci
• staphylococcus
• staphylococcus aureus
• staple
• staple fiber
• staple fibre
• staplegun
• stapler
• stapling machine