1 Across, Against sailor entering piers to get furniture (8)
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10 Across, In the right place-for astronomical observations? (5,3,7)
11 Across, Survive corrosion enveloping article (7)
mole 3 (ml)
n.
1. A massive, usually stone wall constructed in the sea, used as a breakwater and built to enclose or protect an anchorage or a harbor.
2. The anchorage or harbor enclosed by a mole.
A mole, according to wikipedia, is a massive structure, usually of stone, used as a pier, breakwater or causeway between places separated by water. So mole=pier.