strainer

Etymology

From Middle English strener, streynour, strenyour, equivalent to strain + -er.

noun

1. A device through which a liquid is passed for purification, filtering or separation from solid matter; anything (including a screen or a cloth) used to strain a liquid.
2. A perforated screen or openwork (usually at the end of a suction pipe of a pump), used to prevent solid bodies from mixing in a liquid stream or flowline.
3. One who strains.
   An important factor with respect to recurrence [of rectal prolapse] is the fact that many of these patients are chronic strainers. 2008, Kirby I. Bland, Michael G. Sarr, Markus W. Büchler, General Surgery: Principles and International Practice, page 843