noun - a wooden house built in a tree

verb - to look at something

noun, British English - a tool that you use to open tins

noun - the part of gun that you press to make it fire

noun - a kind of container out of which you pour tea into cups

noun - a structure with an open top where a baby can play safely

noun - a friend who you write letters with but do not know him in person

noun, informal - a friend who you write letters with but do not know him in person

verb - to produce music using an instrument

noun - a container where you put food etc. when you go to have a meal outdoors

adjective - (of a job) with shorter working hours than usual

noun - a stuff that you use to clean and polish shoes with

verb - to risk money on something that might happen

noun - a long key on a keyboard that is used to separate words etc.

verb - to rest on a sofa after a long day of work