Yes, shower is a Scrabble word!

Verb

1. Expend profusely; also used with abstract nouns

2. Spray or sprinkle with

3. Take a shower; wash one's body in the shower

4. Rain abundantly

5. Provide abundantly with

Noun

1. A plumbing fixture that sprays water over you

2. Washing yourself by standing upright under water sprayed from a nozzle

3. A brief period of precipitation

4. A sudden downpour (as of tears or sparks etc) likened to a rain shower

5. Someone who organizes an exhibit for others to see

6. A party of friends assembled to present gifts (usually of a specified kind) to a person