block and block [= chocka-block
artemisia sphaerocephala krasch gum ASK gum
timber mountain gum × flooded gum
timor mountain gum × flooded gum
2 atrioventricular block and complete atrioventricular block
BDCB Block Device Control Block
Block 36 and Block 38 in Oman
block by block relaxation operator
block by block transfer
block gage (gage block) (slip gage)
Block Xia 502 and Block Xia 509
block-by-block operation
block-by-block transmission
Building Block and Block Building
jewel block dasher block
plummer-block (plumber block)