tarrock

from The Century Dictionary.

• noun The kittiwake gull, Rissa tridactyla. See cut under kittiwake.
• noun A tern or sea-swallow.
• noun A guillemot or murre.

from the GNU version of the Collaborative International Dictionary of English.

• noun Prov. Eng., Prov. Eng. The young of the kittiwake gull before the first molt.
• noun Prov. Eng. The common guillemot.
• noun The common tern.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun a young kittiwake.
• noun UK, dialect The common guillemot.
• noun UK, dialect The common tern.