Fort Pickens Road is subject to flooding; please call (850) 934-2656 for information on road conditions prior to arrival. Gulf Islands National Seashore charges an entrance fee of $15/private vehicle or $10/private motorcycle, good for 1-7 days; An annual pass can be purchased for $30.
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Full Definition of UDDER. 1. : a large pendulous organ consisting of two or more mammary glands enclosed in a common envelope and each provided with a single nipple â see cow illustration. 2.: mammary gland.See udder defined for English-language learners.edical Definition of UDDER. : a large pendulous organ in various mammals and especially a female domestic bovine consisting of two or more mammary glands enclosed in a common envelope and each provided with a single nipple.