noun
A period of time when something stops or is absent; often used in negative expressions like 絶え間なく (incessantly).
雨が絶え間なく降り続いている。
The rain continues to fall without a break.
仕事の絶え間にコーヒーを飲む。
I drink coffee during a break from work.
noun
A physical opening or space, such as a break in clouds or a crack in a surface.
雲の絶え間から月が見えた。
The moon was visible through a gap in the clouds.
Compound of 絶え (tae, 'ceasing') + 間 (ma, 'interval'). The kanji 絶 means 'discontinue' and 間 means 'space/interval'.