| 单词 | pigeon-hole wall |
| 释义 | > as lemmaspigeon-hole wall pigeon-hole wall n. rare a wall with small apertures. ΚΠ 1874 R. W. Raymond Statistics Mines & Mining 403 When the fire-place is separated from the ore compartment by pigeon-hole walls. 1902 Science 1 Aug. 168/2 The pigeon-hole walls of the chamber and air shaft are supported on short brick columns, so that there is an air space between the walls and the concrete floor. < as lemmas |
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