Meanings
figurativetic, quirk (something that is done habitually)
colloquiallittle bit, hint, tad (very small amount or degree, especially relative to another value)
Die Farbe dürfte noch einen Tick dunkler sein.The color could do being a little bit darker.
Examples
GermanEnglish
Sie hat den Tick, Zahlen, die durch fünf teilbar sind, besonders angenehm zu finden.One of her quirks is that she finds numbers divisible by five particularly pleasing.