Related Clues:

• Pass through a semipermeable membrane
• Pate or oleo
• Absorb slowly
• Jelly or jam
• Flow slow
• Barely get through
• Peanut butter or jelly
• Escape, as through a crevice
• Slip through the cracks?
• Barely flow
• Leak through the cracks
• Diffusion
• Enter via osmosis
• Saturate (with)
• Get (through), eventually