Possible Clues:

• Part of 100-metre dash
• A horizontal word joiner
• Punctuation in ''patty-cake''
• Punctuation mark used between parts of a compound word
• Dash to be seen in bar-room and participating in pub-crawl
• Word connector
• Line once required for email and voicemail
• Say wi-fi connection?
• Top-notch mark?
• One of two in a jack-o'-lantern?