堡 (w)

(bǎo) an earthwork; castle; position of defense; stronghold; used in place names, often as phonetic bao for "burg" or "bad"

堡 (w)

(pù) variant of 鋪|铺; used in place names

堡垒 (w)

(bǎolěi) fort

堡寨 (w)

(bǎozhài) fort; fortress; CL:座[zuo4]

堡礁 (w)

(bǎojiāo) barrier reef