spiky

Short definition from Wiktionary

Adjective

1. 1
   Of a plant: producing spikes (“ears (as of corn); inflorescences in which sessile flowers are arranged on unbranched elongated axes”).
2. 2
   Of a plant part: resembling a spike of a plant (see above).
3. 3
   Having one or more spikes; spiny.
4. 4
   Resembling spikes: erect and having sharp points; spikelike.
5. 5
   Of a person or their nature: difficult to deal with; abrasive, hostile, unfriendly.
6. 6
   Of a thing: not smooth; rough, sharp.
7. 7
   Excessively high church (“practising a formal style of liturgy and emphasizing continuity with Catholicism”).