Sieve

[Britney]

a goalie that allows many goals causing his team to lose the hockey game

[Britney]

Sieve
Any goalie that allows many goals to be scored by an opposing team, thus causing his team own team to lose the game.

Although team St. Amour’s offence was rather weak, it was ultimately their sieve like goaltender that allowed the opposing team to show them Whos Boss

[PussyCat]

a wire mesh or perforated metal utensil used for straining or sifting.
is very commonly used metaphorically to describe things that are leaking or something that has holes in it.

[leaks like a sieve]
bad defense in sports (i.e. poor goalie in hockey)

[Little_Girl]

A sieve is:

1. A hockey goalie that cannot stop a shot
2. Someone who cannot hold their liqour
3. Anyone who acts in a bitch-like mannor, similar to a [tool]

[Tina]

A goalie who allows a lot of goals, enjoys seeing other teams score and watching other teams win, and acts in an overall tool-like manner. They may also hide in their nets to avoid the opposing teams student section.

[Becky]

a shitty goalie. Basically a duster, but as a goalie. Also known as a dehner.

[Sarah]

Somone who sucks at hockey

[Justin Bieber]

In general, a sieve separates wanted/desired elements from unwanted material using a tool such as a mesh, net or other filtration or distillation methods, but it is also used for classification of powders by particle size, or for size measurement as an analytical technique. The word sift derives from this term. A strainer is a type of sieve typically associated with separating liquids from solids.
Chemistry
Sieving coefficient, in transport phenomena
Mathematics
Sieve theory, a technique for counting or filtering sets of numbers
Sieve of Eratosthenes
General number field sieve
Large sieve
Sieve (category theory), a way of writing down how objects in a category glue to give other one

[Raeanne Dimick]

A utensil for separating the finer and coarser parts of a
pulverized or granulated substance from each other. It consist of a
vessel, usually shallow, with the bottom perforated, or made of hair,
wire, or the like, woven in meshes.

[Dianne]

a tool consisting of a wood, plastic, or metal frame with a wire or plastic net attached to it. You use it either to separate solids from a liquid, or you rub larger solids through it to make them smaller: