Not able to be passed. / (tennis) Not able to be passed; not capable of being beaten at the net by a passing shot. / (LGBT) Unable to pass successfully as the gender one wishes to be seen as.

plural of feast

(medicine) Initialism of oral rehydration solution.

Any plant of the genus Helianthus, so called probably from the form and color of its floral head, having the form of a large disk surrounded by yellow ray flowers.