n.barnacle that attaches to rocks especially in intertidal zones
同义词:rock barnacleBalanus balanoides
英汉双解大词典
acorn barnacle(alsoacornshell)
1.
N(名词)
any of various barnacles, such as Balanus balanoides, that live attached to rocks and have a volcano-shaped shell from the top of which protrude feathery food-catching appendages (cirri) 藤壶