An inclination in a particular direction.

“the trend of a coastline”

A tendency.

“There is a trend, these days, for people in films not to smoke.”

A fad or fashion style.

“Miniskirts were one of the biggest trends of the 1960s.”

To have a particular direction; to run; to stretch; to tend.

“The shore of the sea trends to the southwest.”

To cause to turn; to bend.

To be the subject of a trend; to be currently popular, relevant or interesting.

“What topics have been trending on social networks this week?”