Misspelling of side effect.

A half sibling having the same mother but a different father.

plural of side chain

(idiomatic, usually politics, derogatory) Having policies or practices that are perceived as not progressive or enlightened; behaving in a manner that reflects out-of-date or disapproved opinions.

(surveying) A reading or measurement from a survey station to locate a point that is off the traverse or that is not intended to be used as a base for the extension of the survey. It is usually made to determine the position of some object that is to be shown on a map.

present participle of side-hand

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

Indirectly

(transitive) To move by placing the palm of the hand on top and sliding sideways.

Sideways from the hand. / Done with the side of the hand. / Indirect; subtle. / (UK, of a baton or nightstick) Expanding.