Yes, pink is a Scrabble word!

Verb

1. Make light, repeated taps on a surface

2. Sound like a car engine that is firing too early

3. Cut in a zigzag pattern with pinking shears, in sewing

Adjective

1. Of a light shade of red

Noun

1. A light shade of red

2. Any of various flowers of plants of the genus Dianthus cultivated for their fragrant flowers

3. A person with mildly leftist political views