(aviation) The phenomenon where an aircraft's radar with limited directional capabilities receives strong echoes from the ground, swamping target signals and generating a triangular radar trace.

plural of Christmas tree effect

A Christian who does not frequently attend church, attending only on the major holidays of Christmas and Easter.

The swiftlet Collocalia natalis.

plural of Christmas Island swiftlet

A large number of fortuitous events come at the same time.

A polychaete of the species Spirobranchus giganteus.

The season or time made up of the twelve days between Christmas and Epiphany; Christmas season, Christmas time, Christmastide, Twelvetide. The Christmas season traditionally ended with the feast of the Epiphany on January 6.

plural of white Christmas slice

(Australia, food) A sweet food item made from dried fruits and nuts mixed with copha or white chocolate or similar sweet white binding and allowed to set in a tray to make slices.