POP also stands for Point of Presence - a term used in telcos for designating their service points. POPs constitute Internet and telephone network excha.
A type of play in Scrabble and other crossword games. A hook involves extending a previously played word by one letter, and playing a word perpendicular.
Gee Whiz Facts About Ice Most kinds of matter contract as they freeze, but when water freezes its molecules move apart taking up more space and become l.