A kind of piston engine where three or four cylinder banks use the same crankshaft, resembling the letter W when viewed from the front.

plural of decoy effect

(marketing) The phenomenon whereby consumers will tend to have a specific change in preference between two options when also presented with a third option that is asymmetrically dominated: that is, the third option is inferior in all respects to one option, but, in comparison to the other, it is inferior in some respects and superior in others.

plural of English knot

A loop knot made in the bight. Favoured by fishermen as quick and secure. Also known as fisherman's knot, fisherman's loop, Englishman's knot, water knot, waterman's knot.

(military) Denoting a very low-altitude flight course used by military aircraft to avoid enemy detection and attack in a high-threat environment.

plural of figure-eight hitch

A becket hitch favoured by anglers to hitch a line to a leader loop.

(psychotherapy) A therapist or copatient who acts out a role in a patient's psychodrama.

A council area of Scotland (one of 32); it was formed in 1996 on the abolition of Strathclyde Region.