n. & v.
n. a general direction and tendency (esp. of events, fashion, or opinion etc.).
v.intr. 1 bend or turn away in a specified direction. 2 be chiefly directed; have a general and continued tendency. trend-setter a person who leads the way in fashion etc. trend-setting establishing trends or fashions.
[ ME 'revolve' etc. f. OE trendan f. Gmc: cf. TRUNDLE ]