(woodworking) Of tools: sharpened with sandpaper instead of the conventional oilstone or waterstone, etc.

(idiomatic) To vex oneself; to worry.

(transitive) To put (something) into a back pocket. / (transitive, idiomatic) To put (something) aside for future use; to keep in reserve.

(botany) A plant that grows on another, using it for physical support but obtaining no nutrients from it and neither causing damage nor offering benefit; an air plant.