山砦[sansai] mountain stronghold
城砦[jousai] fortress
砦を落とす[toridewootosu] to capture a fort

砦を築く[toridewokizuku] to construct a fort
鹿砦[rokusai] abatis

ワープロ馬鹿[waapurobaka] someone whose kanji-writing ability has suffered due to overreliance on the kana-to-kanji conversion systems used to input Japanese text on a computer
鹿驚[kagashi] scarecrow
河鹿[kajika] kajika frog (Buergeria buergeri)
葦鹿[michi] eared seal (esp. the California sea lion, Zalophus californianus)
鹿児島県[kagoshimaken] Kagoshima prefecture (Kyushu)

鹿追[shikaoi] hinged bamboo water cup or trough, which makes a percussive sound periodically as it tips over
親馬鹿[oyabaka] (over) fond parents
中原の鹿[chuugennoshika] the aim (in a campaign)
馴鹿[tonakai] reindeer (Rangifer tarandus)