ictus /ikˈtəs/

1. Rhythmical or metrical stress in contradistinction to the usual stress of a word in prose, etc (prosody)
2. A stroke or sudden attack, esp an epileptic fit (medicine)

• keep a straight bat
• keep a straight face
• keep at
• keep at bay
• keep a term
• keep a tight rein
• keep a tight rein on
• keep back
• keep body and soul together
• keep cave
• keep company
• keep counsel
• keep count
• keep dark
• keep down
• keep early hours
• keeper
• keeperless
• keepers
• keepership
• keeperships
• keep fair with
• keep faith
• keep fit
• keep-fit