- One that strains, as a device used to separate liquids from solids.
- A standing or fallen tree whose branches are partly submerged in a fast-flowing river, presenting a hazard to navigation or to swimmers.
- An apparatus for tightening, stretching, or strengthening.
- 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; any device functioning as a sieve or filter - in special, 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.
- One who strains.