The most common and most likely answer to this crossword clue is the 6 letter word BRIDGE
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More clues leading to the result BRIDGE
- Several hands needed for this dental work
- Game Irish saint can’t finish
- The Woman in White garners Grand Cross
- Captain's position in game
- Joiner, groom initially embraced by his partner?
- Card game — pontoon, perhaps?
- Partner in match accepting golf game
- Come across game
- Promotion of friendly relations in House Of Cards?
- Something 12 which is played
Buddy explains!

The straight part
We know that "Joiner" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case joiner = bridge.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BRIDGE mean?
BRIDGE noun- A construction or natural feature that spans a divide.
- An arch or superstructure.
- A connection, real or abstract.
- Any of several electrical devices that measure characteristics such as impedance and inductance by balancing different parts of a circuit
- A low wall or vertical partition in the fire chamber of a furnace, for deflecting flame, etc.; a bridge wall.
- The situation where a lone rider or small group of riders closes the space between them and the rider or group in front.
- A solid crust of undissolved salt in a water softener.
- To be or make a bridge over something.
- To span as if with a bridge.
- To transition from one piece or section of music to another without stopping.
- (communication) To connect two or more computer buses, networks etc. with a bridge.
- To go to the bridge position.
- A card game played with four players playing as two teams of two players each.