a railing at the side of a staircase, road, etc, as a safety barrier
2.
railways Also called (Brit): checkrail a short metal rail fitted to the inside of the main rail to provide additional support in keeping a train's wheels on the track
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
the offspring of a zebra and a donkey.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a gadget; dingus; thingumbob.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.