Definition of weenies:
(n) :
(slang, sometimes derogatory) Someone weak and unimportant, a wimp.
(n) :
(slang, sometimes derogatory) A geek or nerd, especially a computer user with a deficient social life.
(n) :
(collectible card games, slang) A small creature which has a low cost to put into play, often used in a swarm with other such creatures.
(n) :
Alternative form of wienie (“sausage”). [(Canada, US, informal) A wiener sausage.]
(n) :
(slang) Alternative form of wienie (“penis”). [(Canada, US, informal) A wiener sausage.]