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

plural of thorn in someone's side

Mergus squamatus, an endangered species of merganser found in eastern Asia

(construction) An application wherein the waterproofing system and source of hydrostatic pressure are on opposite sides of the structure.

(construction) An application where the waterproofing systems and source of hydrostatic pressure are on the same side of the structural element.

(algebra) A subring which is both a left ideal and a right ideal. Commonly referred to simply as an ideal, but referred to as two-sided ideal for emphasis.

plural of side-striped jackal

A species of jackal (Canis adustus), native to central and southern Africa.

(computing) A server-side directive in a certain scripting language used on the World Wide Web, allowing the contents of external files to be included at specified points within a web page.

plural of positive side waterproofing