A species of tree frog native to Costa Rica, Agalychnis annae, noted for the blue stripes running down both of its sides.

Moving horizontally, from one side to another and back.

(idiomatic) A place where things are stored or reserved, as in:

(idiomatic) A direct, somewhat impolite demand to ask someone to move out of the way.

plural of side effect

(automotive) A type of internal combustion engine design which has the inlet and exhaust valves in the cylinder block beside the piston. The cylinder head is then a simple dome extending across the valves and piston.

A mode of grafting in which the scion, cut quite across very obliquely, so as to give it the form of a slender wedge, is thrust down inside of the bark of the stock or stem into which it is inserted, the cut side of the scion being next the wood of the stock.

(squash, racquetball) Either of the two parallel walls in a court, perpendicular to the front wall; either of the walls on the side of the court.

(transitive, idiomatic) To behave in a manner which favours or which is biased toward. / To choose which mistake (err) will be perpetuated when all available options would result in different mistakes.

(idiomatic) To act in the least risky manner in a situation in which one is uncertain about the consequences.