[栋梁 / 棟樑, dòng liángㄉㄨㄥˋ ㄌㄧㄤˊ] ridgepole; ridgepole and beams; person able to bear heavy responsibility; mainstay (of organization); pillar (of state)#37726
[汗牛充栋 / 汗牛充棟, hàn niú chōng dòngㄏㄢˋ ㄋㄧㄡˊ ㄔㄨㄥ ㄉㄨㄥˋ] lit. enough books to make a pack-ox sweat or to fill a house to the rafters (成语 saw); fig. many books#95529
[むね, mune] (n) (1) (often むな as a prefix) ridge (of roof); (2) (See 刀背) back of a sword; (suf, ctr) (3) counter for buildings, apartments, etc.; (P)#3174
[むなふだ;むねふだ, munafuda ; munefuda] (n) sign staked to a building's ridgepole at construction time stating the building's donor, builder, date, reason for construction, etc.