(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.

plural of side issue

plural of side street

A secondary road; a road that is not intended for heavy traffic.

A serving of food meant as an accompanying dish.

plural of side-effect

Third-person singular simple present indicative form of side-effect