- any of numerous solitary bees, as of the family Megachilidae, that construct nests of clay.
Origin of mason bee
First recorded in 1765–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for mason bee
Let us continue our series of tests with the Mason-bee of the Walls.
Here is a Mason-bee building; she is at work on the first course of her cell.
I shall call it the Chalicodoma, or Mason-bee, of the Sheds.
The Mason-bee is a housekeeper of scrupulous cleanliness, as indeed are all the Hymenoptera.
Some thief might drop in and substitute her own egg for the Mason-bee's.
- any bee of the family Megachilidae that builds a hard domelike nest of sand, clay, etc, held together with saliva